HRS ZERO SCREW EF2 Series User manual

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
OBJECT
PRODUCT:
EF2 SERIES
Figure No.
ETAD-C0387-00
PAGE: 1 OF 36
EF2 Series
Guideline for Design and Handling

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
OBJECT
PRODUCT:
EF2 SERIES
Figure No.
ETAD-C0387-00
PAGE: 2 OF 36
Number Page
1. Introduction .............................................................................................................................. 3
1.1 Purpose of Hirose’s guideline................................................................................................... 3
2. Precautions ............................................................................................................................... 3
3. Product Number Structure and Outer Dimensions........................................................................... 5
3.1 Product Number Structure ...................................................................................................... 5
3.2 Outer dimensions .................................................................................................................. 6
4. Materials and Characteristics of Product ........................................................................................ 9
４.1 Series specification matrix ..................................................................................................... 9
４.2 Specifications of applicable cables..........................................................................................10
５. Usage and Precautions..............................................................................................................11
5.1 Applicable crimp contact (Contact with different thickness is not allowed) ....................................11
5.2 Crimp work procedure...........................................................................................................13
5.3 Product operation .................................................................................................................14
5.4 Support for linkage (Description of method for each product) .....................................................23
5.5 Mounting and removing to and from DIN rail............................................................................25
5.6 Bending radius for each cable (bending radius which allows routing) ...........................................29
5.7 Strength against prying of cable .............................................................................................30
5.8 Nameplate...........................................................................................................................35
5.9 Applicable probe and usage....................................................................................................35
6. Connecting Tools.......................................................................................................................36
6.1 Recommended crimping tools ................................................................................................36

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
OBJECT
PRODUCT:
EF2 SERIES
Figure No.
ETAD-C0387-00
PAGE: 3 OF 36
1. Introduction
1.1 Purpose of Hirose’s guideline
Before using ZERO SCREWTM Terminal Block (EF2 Series), refer to the following guideline describing
precautions on equipment design and work. Note that photos and illustrations in this document
refer to our representative product and differ depending on the product.
The guideline information is subject to change.
2. Precautions
To use the product correctly, read the following Prohibitions/Cautions described in the guideline
before use. In this EF2 Series Guideline, safety precautions rankings are classified as "Prohibition"
and "Caution".
■ Meanings of prohibitions and cautions
Prohibition
Indicates actions that must not be performed because incorrect
handling may immediately result in death or serious injury to the
user.
Caution
Indicates incorrect handling that may result in property damage.
Be sure to observe the following Prohibitions/Cautions.
・Always turn off the power before using the product. Failure to do so may result in an electric
shock or damage.
・Do not touch the metallic parts. Touching the metallic parts this may result in an electric
shock.
・Do not use the product at power-supply voltage and currents exceeding the rating. This may
result in a fire or an electric shock.
・Do not use terminals other than the specified ones. Doing so may result in a contact failure
or ignition.
・As for crimp contacts, keep the insulating distance with insulating tubes so that live parts are
not exposed in order to prevent an electric shock or a short circuit.
・Do not use crimp contacts that are deformed or largely scratched. Using unsuitable crimp
contacts may result in a contact failure or an ignition.
・When using a crimp contact that was previously used for the terminal block, check it for
deformations and large scratches before use. Do not use a crimp contact with deformations
or large scratches.
Replace it with a new crimp contact before use.
Prohibitions
Cautions

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
OBJECT
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EF2 SERIES
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・Do not expose the product to vibrations or shocks exceeding the product specifications.
・Do not use our products outdoors because they are designed for indoor applications.
・Remove the edge of the DIN rail end face. Not doing so will cause difficulty in mounting the
product because it gets caught on the edge.
・Do not store or use our products under conditions with corrosive materials that may cause
the physical deterioration of plastic and metal rust.
・If solvent is applied to the product by necessity for improved insulation strength or
protection, check that it will not cause physical deterioration of the plastic before use.
・Salt damage countermeasures are not implemented for our products.
・Use the specified crimp contacts and check them for deformations and contamination,
including oil and contact resistance failure, before use.
・Use the tinned crimp contacts. Check them for abnormalities in inserting/removing force and
contact resistance before use.
・Do not store or use our products in a place close to the sea or under conditions of salt
exposure. If metal rust or significant discoloration is found, replace it with a new one.
・Store and use our products at an altitude of 2000 m or less and within the operating
temperature range, operating humidity range, and storage temperature range described in
this catalog store and use products so that no freezing or condensation occurs.
*Please check the product standards of Our Company on our website.
Company Homepage: https://www.hirose.com/

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
OBJECT
PRODUCT:
EF2 SERIES
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ETAD-C0387-00
PAGE: 5 OF 36
3. Product Number Structure and Outer Dimensions
3.1 Product Number Structure
Refer to the chart below when determining the product specifications from the product number.
Please select from the product numbers listed in this catalog when placing orders.
ＥＦ２ - ＤＨ150 Ｂ–1 （０１）
①②③④⑤⑥⑦
①Series name
ＥＦ２= Push Type
ＥＦ２Ａ= Twist Type
②Mount type
D ＝DIN rail mount
③Connection Type
Blank = One Action on Both Sides
H = One-Sided Screw Type
④Current capacity
sign
30, 60, 150, 200, 250, 400
⑤Protection Design
Blank = No Protection Design
B = With Protection Design
⑥Linked quantity
(D150 type only)
⑦Other specifications
Additional product specifications will be identified
by the addition of (01), (02), etc., as needed.
EF2 Series
EF2A Series
EF2 Series is
released by
pressing the lock.
EF2A Series is
released by
twisting the
lock.
One-Sided Screw Type

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
OBJECT
PRODUCT:
EF2 SERIES
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ETAD-C0387-00
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3.2 Outer dimensions
Caution: - All height dimensions shall be measured from the DIN rail.
- Width dimensions in linkage are based on Section 5.5.1: Width dimension in
connecting housing.
ＥＦ２－Ｄ３０－１
17.5
57.6
41.7
46.35
21
63.6
ＥＦ２－Ｄ６０－１
40.5
71
53.45
※53.95
5
ＥＦ２－Ｄ１５０－１
※Twisting type

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
OBJECT
PRODUCT:
EF2 SERIES
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ＥＦ２Ａ－Ｄ２００－１
49.6
111
80.45
※80.25
ＥＦ２－Ｄ２５０－１
92.3
40.4
70.25
※Twisting type

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
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EF2 SERIES
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55
111
87.5
※85
ＥＦ２－Ｄ４００－１
※Twisting type

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
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PRODUCT:
EF2 SERIES
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4. Materials and Characteristics of Product
４.1 Series specification matrix
・Materials / Finish
Component
Materials
Finish
Housing
m-PPE
UL94V-0, Black
Lock
PBT
UL94V-0, Black/Red/Orange
Bus bar
Copper
Tin plated
Spring
SUS
－
Cover
PC
UL94V-0,Clear
Screw
Iron
Trivalent chromate
・Characteristics
Rated
current
Product
D30
D60
D150
D200
D250
D400
Applicable
cable
1.25mm2=16A
2mm2=21A
3.5mm2=30A
5.5mm2=40A
5.5mm2=40A
8mm2=50A
14mm2=70A
22mm2=94A
38mm2=132A
60mm2=175A
60mm2=175A
100mm2=240A
150mm2
=310A
200mm2
=400A
Rated voltage
600 V AC/DC
1000 V AC,1500 V DC
Withstanding
voltage
2500 AC per 1 minute
5000 V AC
per 1 minute
Contact resistance
1 mΩ max. (1A DC)
0.1 mΩmax. (1A DC)
Operating
temperature
-25°C to +105°C*
Storage
temperature
-10°C to +60°C
Insulation resistance
1000 MΩ min. (500 V DC)
Durability
50 times
*: Including the temperature rising by current flow.

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
OBJECT
PRODUCT:
EF2 SERIES
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ETAD-C0387-00
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４.2 Specifications of applicable cables
Current capacity sign
Applicable cable size (mm2)
30
1.25
2
3.5
5.5
60
5.5
8
14
-
150
22
38
60
-
200
60
100
-
-
250
150
-
-
-
400
200
-
-
-

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
OBJECT
PRODUCT:
EF2 SERIES
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ETAD-C0387-00
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５. Usage and Precautions
5.1 Applicable crimp contact (Contact with different thickness is not allowed)
Select the applicable crimp contact by referring to Table 1: Part numbers of recommended crimp
contacts and Table 2: Dimensions of applicable crimp contacts.
Also, refer to the List of enabled/disabled of crimp contacts.
Table 1 Part numbers of recommended crimp contacts
Current
capacity sign
Crimp contact
manufacturer
Part numbers of crimp contacts
30
JST
R1.25-5
R2-5
3.5-R4
R5.5-4
－
－
Nichifu
R1.25-5
R2-5
R3.5-4
R5.5-4
－
－
60
JST
R5.5-5
R8-5
R14-5
－
－
－
Nichifu
R5.5-5
R8-5
R14-5
－
－
－
150
JST
R22-8
R22-10
R38-8
R38-10
R60-8
R60-10
Nichifu
R22-8
R22-10
R38-8
R38-10
R60-8
R60-10
200
JST
R60-10
R100-10
－
－
－
－
Nichifu
R60-10
R100-10
－
－
－
－
250
JST
R150-12
R150-14
－
－
－
－
Nichifu
R150-12
R150-14
－
－
－
－
400
JST
R200-12
R200-14
－
－
－
－
Nichifu
R200-12S
R200-14
－
－
－
－
Prohibition:Using a crimp contact with a different size will cause a poor fit and insufficient contact.

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
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PRODUCT:
EF2 SERIES
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ETAD-C0387-00
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Figure 1 Dimensions of applicable crimp contacts
Table 2 Dimensions of applicable crimp contacts [mm]
Current capacity sign
A
B
C
D
E
30
1 +0.05/-0.3
9.5 or less
-
2.6 or less
4.3 or more
60
1.5 +0.1/-0.8
12.2 or less
-
3.35 or less
5.3 or more
150
1.8 +0.3/-0.1
24.3 or less
-
7 or less
8.4 or more
200
2.6 +0.2/-0.8
28.9 or less
－
10.5 or less
10.5 or more
250
3.3 ±0.1
36.5 or less
18±0.2
-
13 or more
400
4±0.1
44.5 or less
22±0.2
-
13 or more
Caution: Select the crimp contact that meets all dimensions shown above.
If one of the dimensions is not met lock or sufficient contact cannot be achieved.
Table 3 List of enabled/disabled of crimp contacts
Current capacity sign
R1.25
R2
R3.5
R5.5
R8
R14
R22
R38
R60
R100
R150
R200
30
〇
〇
〇
〇
×
×
×
×
×
×
×
×
60
×
×
×
〇
〇
〇
×
×
×
×
×
×
150
×
×
×
×
×
×
〇
〇
〇
×
×
×
200
×
×
×
×
×
×
×
×
〇
〇
×
×
250
×
×
×
×
×
×
×
×
×
×
〇
×
400
×
×
×
×
×
×
×
×
×
×
×
〇
Caution: - 〇: Enabled crimp contact, ×: Disabled crimp contact
- Using an inappropriate crimp contact may result in contact failure or ignition.
Please adhere to the measurements especially for the contact thickness of A.

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
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PRODUCT:
EF2 SERIES
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5.2 Crimp work procedure
5.2.1 Method for Cutting Cable Length and Cable Protrusion Length from Contact
Setting of cable cutting length and protrusion length from crimp contact
・Ａ indicates the cable cutting position. Cut the cable at dimension A from the product end face.
Cutting the cable out of the tolerance range may result in poor fit after crimping the terminal.
・Ｂ is the dimension of the conductor protruding from the crimp contact before crimping.
Caution: Set the ranges specified in the table. Setting a dimension out of tolerance range may
result in a poor fit or continuity failure.
［ｍｍ］
Current capacity sign
Crimp contact size
Ａ
Ｂ
30
R1.25
11±1
1
0
-0.5
R2
11±1
1
0
-0.5
R3.5
10±1
1
+1
-0.5
R5.5
10±1
1
+1
-0.5
60
R5.5
11±1
1
0
-0.5
R8
10±1
1
+1
-0.5
R14
8±2
2±1
150
R22
10.5±2
2±1
R38
8±2
3±2
R60
6±2
4±2
200
R60
13.5±2
3±2
R100
12±2
3±2
250
R150
15.5±2
3±1
400
R200
9±2
4±2
Ａ
Cable cutting position
Cable
Ｂ
Product end face

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
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EF2 SERIES
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5.2.2 Insulation Tube Handling
To prevent electric shock or short circuit, maintain an insulating range by use of
insulation tube etc. so that the charging part is not exposed to the crimp contact.
If the insulation tube is displaced forward, the insulation tube may interfere with the lock
engaging properly. If it does not lock, refer to the figure below to check the position
of the insulation tube.
5.3 Product operation
5.3.1 Inserting crimp contact
Insert the applicable crimp contact into the crimp contact insertion position (between the
spring and the bus bar) shown in the figure below.
For the crimp contact insertion position, refer to the insertion cross-section view on the next
page.
OK
Not OK
※The insulation tube is pushed forward.
Insertion position of
crimp contact
Insertion position of
crimp contact
Unlock button
Lock checking section
Lock checking
section

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
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EF2 SERIES
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Caution: ・The insert direction of the crimp contact is the position shown in the figure.
If the contact can fit 180°in the opposite direction, the product can be used with
the contact in this position.
At this point, check that the product is in the locked state as described in Section
5.3.3.
・Depending on size, the cable may be difficult to insert. In such cases insert while
moving the cable left and right.
Prohibition: ・Do not insert the crimp contact into a position other than the insertion position.
Inserting the crimp contact incorrectly will not provide a fitting lock even if the
contact is inserted. Furthermore, the product may be damaged.
Spring
Bus bar
Fitting cross-section view
Insert direction of
crimp contact
ＯＫ
No protection
With protection
ＯＫ
Spring
Bus bar
Insert direction of
crimp contact
Protector
Not OK
Not OK

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
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PRODUCT:
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5.3.2 Locked state
5.3.2.1 Locked state（EF2-D30、D60）
The locked state is a state in which the orange salient points to the symbol as shown in
the figure below.
After changing the product into the locked state, make sure that the crimp contact is
not disconnected even if the cable is pulled.
If the crimp contact is disconnected, the insertion is not sufficient.
Using the product in this state may result in contact failure or ignition.
Insert the crimp contact again and be sure to lock it.
Prohibition: ・Avoid leaving the product in the unlocked position.
Failure to follow this will detach the crimp contact to cause contact failure.
・If the product is in the unlocked state, fit the crimp contact into the locked state
again.
OK: Locked
Not OK: Unlocked
The orange salient
must point to the
lock symbol.
OK: The orange salient
points to the position
の位置にきているので○
Not OK: The orange salient
does not point to the position
(insufficient insertion)

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
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5.3.2.2 Locked state（EF2-D150、D250、D400）
The locked state is a state in which the red salient points to the symbol as shown in the
figure below.
After changing the product into the locked state, ensure that the crimp contact is not
disconnected even if the cable is pulled.
If the crimp contact is disconnected, the insertion is not sufficient.
Using the product in this state may result in contact failure or ignition.
Insert the crimp contact again and make sure to lock it.
OK: Locked
Not OK: Unlocked
The red salient
must point to
the lock
symbol. .
OK: The red salient
points to the position
Not OK: The red salient does
not point to the position
(insufficient insertion)

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
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5.3.2.3 Unlock（EF2A-D150, D200, D250, D400）
Connector is locked when the raised red portion in the figure below is on the lock side.
After changing the product into the locked state, ensure that the crimp contact is not
disconnected even if the cable is pulled.
If the crimp contact is disconnected, the insertion is not sufficient.
Using the product in this state may result in contact failure or ignition.
Insert the crimp contact again and make sure to lock it.
If the red raised portion is not on the lock side when the crimp contact has been fully
inserted, twist the red raised portion to the lock side by hand.
The product may be difficult to lock depending on the contact size and hole diameter. If it is
difficult to lock move the crimp contact back and forth and left and right to lock.
OK: Locked
Not OK: Unlocked
Lock side
Release side
OK: The red raised portion is
on the lock side.
Not OK: The red raised portion is
not on the lock side.
(insufficient insertion)
Lock side
Release side

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
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5.3.3 Locked state
5.3.3.1 Unlock（EF2-D30、D60）
Unlock is performed by pulling out the crimp contact or cable while pressing the unlock button.
5.3.3.2 Unlock（EF2-D150、D250、D400）
Unlock is performed by pulling out the crimp contact or cable while pressing the unlock button.
Pull out
Pull out

TITLE:
EF2 Series Guideline
REVISION DATE: 13-Oct.-20
Rev No. 3
HIROSE ELECTRIC CO., LTD.
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5.3.3.3 Unlock（EF2A-D150, D200, D250, D400）
Pull out the crimp terminal or cable while twisting the "Unlock Button" to the release side to
release the lock
Release side
Pull out
Release side