Larson Electronics EXP-MTSTR-DOL-3P-480V-5HP-5A User manual

EXP-MTSTR-DOL-3P-480V-5HP-5A
Explosion Proof Combination Motor Starter
Class I, II, III - 5HP, 480V Rated 3PH - NEMA 4, 4X
Instruction Manual
Thank you for your purchase of the Larson Electronics EXP-MTSTR-DOL-3P-480V-5HP-5A combo motor starter.
WARNING
TO AVOIDTHE RISKOF FIRE,EXPLOSION OR ELECTRIC SHOCK, THIS PRODUCT SHOULD BE INSTALLED,
INSPECTEDAND MAINTAINEDBY A QUALIFIED ELECTRICIANONLY, IN ACCORDANCEWITHALL
APPLICABLEELECTRICAL CODES.
TO AVOIDELECTRIC SHOCK:
•BE CERTAIN ELECTRICAL POWER IS OFF BEFORE AND DURING INSTALLATION AND MAINTENANCE.
•PRODUCT MUST BE CONNECTEDTOA WIRING SYSTEM WITHAN EQUIPMENT-GROUNDING
CONDUCTOR.
TO AVOID EXPLOSION:
•MAKE SURE THE SUPPLY VOLTAGE IS WITHIN THE VOLTAGE RATING.
•ENSURE THE MARKED T RATING IS LESS THAN THE IGNITION TEMPERATURE OF THE HAZARDOUS
ATMOSPHERE.
•DO NOT OPERATE IN AMBIENT TEMPERATURES ABOVE THOSE INDICATED ON THE PRODUCT
NAMEPLATE.
•DO NOT OPERATE IF THE LENS, CORD, SEALS, HOUSING, RECEPTACLES, ETC. IS CRACKED OR
DAMAGED. IF SO, DISCONTINUE USE AND CONTACT MANUFACTURER FOR REPLACEMENT PARTS.
•ALL FASTENERS SHOULD BE PROPERLY SEATED.
The Larson Electronics EXP-MTSTR-DOL-3P-480V-5HP-5A Explosion Proof Combination Starter provides motor starting
solutions for industrial equipment located in combustible environments. This 5 HP unit provides compatibility with 480V
three-phase and is protected by a NEMA 4, 4X enclosure. The solid-state, explosion proof device features manual and
automatic reset controls.
MOUNTING
We recommend only a licensed electrician complete the installation of this unit. All applicable
local and national electrical and building codes should be followed when installing. Consult
your local authority for interpretation of codes if necessary. Unit is heavy and may require 2 or
more people to lift and hold while mounting.
The Larson Electronics EXP-MTSTR-DOL-3P-480V-5HP-5A Explosion Proof Combination Starter is
designed for surface mounting applications, facilitated by slotted mounting feet on the rear of the
enclosure. The enclosure can be mounted to any flat surface capable of supporting the load. Lift the
enclosure into place and drive heavy duty mounting screws or bolts through the mounting slots and
surface. Be sure enclosure is mounted securely and that surface is sturdy enough to support the load.
WIRING
We recommend only a licensed electrician complete the installation of this unit. Check product label for correct
voltage ratings! Refer to wiring diagram included with the starter unit if needed. Supply power should always be
off when enclosure is open within the hazardous area.
Line-in voltage of 480vAC is fed through the top hub of the enclosure, and connected to the main breaker switch via the top
terminals. Line-in voltage of 480vAC is then routed through the contactor and out the bottom hub of the enclosure to be
connected to equipment. The coil of the contactor and the remote reset module runs on 120vAC separately from the main
circuit breaker and the contacts of the contactor, and thus must also be supplied by it's own wiring. The contactor overload
will automatically cut power to the equipment in the event of a circuit overload to protect the equipment from damage. The
main breaker will also trip in the event of an overcurrent or short circuit. Two plugged hubs are available on the front of the
enclosure for optional installation of control operators or indicators, such as pilot lights or push buttons. Refer to the wiring
diagram included with the unit for specific wiring connections. Abide by all applicable local and national electrical
and building codes for the hazardous area when installing. Consult your local authority for interpretation of codes
if necessary. Be sure unit is properly grounded using the supplied ground wire.
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com 1of 2

EXP-MTSTR-DOL-3P-480V-5HP-5A
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com 2of 2
OPERATION
Once wiring is complete, and the unit has been closed and sealed per applicable codes, restore supply power and turn
the main breaker handle to the "ON" position to start sending power through the motor starter unit. This will start the
equipment being supplied by the starter. Turn handle to "OFF" to disconnect power as needed.
THESE INSTRUCTIONS MAY NOT COVER ALL DETAILS OR VARIATIONS OF THIS PRODUCT FOR YOUR EQUIPMENT OR INSTALLATION REQUIREMENTS.
SHOULD FURTHER INFORMATION NOT COVERED BY THESE INSTRUCTIONS BE REQUIRED, PLEASE CONTACT LARSON ELECTRONICS BY EMAIL AT
SAL[email protected] OR BY PHONE AT 1-877-348-9680 FOR FURTHER ASSISTANCE.
PLEASE VISIT LARSONELECTRONICS.COM FOR WARRANTY AND RETURN INFORMATION.
In the event of an overcurrent or short circuit on the main breaker, the breaker will trip to
protect the equipment from receiving too much current. Test supply voltage and verify it is
correct, and make any changes or repairs necessary to bring it back within specifications for
the starter unit. Cycle the breaker "OFF" and then "ON" again once the current has been
corrected to restore power to the equipment.
In the event of an overload on the equipment side, the thermal circuit protector inside the
enclosure will trip, cutting power to the equipment and protecting it from damage. To reset the
circuit protector, verify the load on the circuit protector is not beyond maximum rating, and
press the reset button on the front of the starter unit to restore power to equipment.
DO NOT OPEN THE UNIT WITHIN THE HAZARDOUS AREA IF IT IS STILL RECEIVING
POWER. DISCONNECT SUPPLY POWER IF ANY INTERNAL REPAIR IS NEEDED.
USE AND CARE
Unauthorized modification may impair the function and/or safety of this device and could affect the life of the equipment.
Always check for damaged or worn out parts before using the device. Store it in a secure place out of the reach of
children when not in use.Inspect for good working condition prior to storage and before re-use.
REPLACEMENT PARTS
The EXP-MTSTR-DOL-3P-480V-5HP-5A is designed to provide years of reliable performance. Should the need for
replacement parts arise, please contact Larson Electronics.
NOTE: Wiring diagram includes typical setup of N.C. STOP button and N.O. START button. These buttons are
not included with the starter unit as standard, but are available for purchase from Larson Electronics if
needed. If these controllers are not being installed, CONNECT 120VAC DIRECTLY TO CONTACTOR COIL.
Wiring diagram available at: https://www.larsonelectronics.com/images/product/WiringDiagram/153826.PDF

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PRODUCTION RELEASE 05-25-2023
EXP-MTSTR-DOL-3P-480V-5HP-5A
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TITLE
DRAWN BY DATE
CHECKED BY SHEET #
LARSON
ELECTRONICS
9419 E US HWY 175,
KEMP, TX 75143
DRAWING #
REV
EXP-MTSTR-DOL-3P-480V-5HP-5A
J.Maldonado 05-25-2023
S.Desai 1 1 101
A
101.01
101.02
101.03
101.04
101.05
101.06
101.07
101.08
101.09
101.10
101.11
101.12
101.13
101.14
101.15
101.16
101.17
101.18
101.19
101.20
101.21
101.22
101.23
101.24
101.25
101.26
101.27
101.28
101.29
101.30
7A MOTOR CIRCUIT PROTECTOR
CB1-101.17
W/ OVERLOAD PROTECTION
3P CONTACTOR
CR1-101.05
480VAC L1
480VAC L2
480VAC L3
480VAC T1
480VAC T2
480VAC T3
COIL 110/120VAC L COIL 110/120VAC N
NC
NO 101.08,101.15,101.17,101.19
110V@50HZ, 120V@60HZ
CONTACTOR COIL VOLTAGE
CR1-101.05
GND
GRN_14AWG
YEL_14AWG
ORG_14AWG
BRN_14AWG BRN_14AWG
ORG_14AWG
YEL_14AWG
BRN_14AWG
ORG_14AWG
YEL_14AWG
WHT_18AWG
EXP PROOF ENCLOSURE
TAGS QTY CATALOG DESCRIPTION
CB1-101.11 1 UNV00018792 Explosion Proof Combination Motor Starter - Class I, II, III
- 5HP, 480V Rated 3PH - NEMA 4, 4X
RESET 120VAC L RESET 120VAC N
PB1-101.14
N.O. RESET
MOMENTARY BUTTON
REMOTE RESET MODULE
WHT_18AWGBLK_18AWGBLK_18AWG
MOMENTARY BUTTON
N.C. STOP
PB1-101.05 WHT_18AWG
WHT_18AWG
BLK_18AWG
BLK_18AWG
PB1-101.05A
N.O. START
MOMENTARY BUTTON
AUXILIARY CONTACT
CR1-101.05
PLEASE NOTE:
N.C. STOP AND N.O. START BUTTONS ARE NOT INCLUDED
OF OVERLOAD
N.C. CONTACT
CR
BLK_18AWG BLK_18AWG
IF N.C. STOP AND N.O. START BUTTONS ARE
NOT BEING INSTALLED, CONNECT 120VAC
DIRECTLY TO CONTACTOR COIL WHILE USING
N.C. CONTACT OF OVERLOAD