Watlow E-Safe II User manual

E-SAFE®II Provides
Power Switching at
High Amperage and
High Ambient
Temperatures
The patent pending E-SAFE®II hybrid power switch from
Watlow®provides reliable
and accurate power switching up
to 35 amperes at 70°C (158°F).
This mercury-free product is
specifically designed to operate in the higher ambient
temperatures of foodservice applications.
The use of mercury relays is being eliminated due to many
regulations affecting its use in the United States and around
the world. When replacing mercury-relay switches, the E-SAFE
II is the best performing product at the most economical price.
Because of the product's unique design, there is no need to
purchase costly heat sinks used with traditional solid state
relays (SSRs). In addition, this is a three-phase device, so there
is no need to wire multiple command signals. With a switching
life of millions of cycles and an ambient rating of 70°C (158°F),
with no heat sink required, this product is more superior than
typical SSRs.
The E-SAFE II hybrid power switch provides foodservice
operators with longer contact life and higher performance than
typical mechanical contactors used in equipment. By using
Watlow’s patent pending NO-ARC technology, the E-SAFE II
can switch millions of cycles increasing the life of the product
with decreased noise and increased temperature accuracy.
E-SAFE II's inherent ability to operate at fast cycle time
provides a nice complimentary product for a time proportioning
(PID) controller.
Not only are you faced with mercury phase outs in order to
compete in the international market, you must consider RoHS
compliancy. E-SAFE II, while being mercury free, is also RoHS
compliant by design, CE approved and C-UL®/UL®recognized.
The reliability of the product is protected by a 24 month
warranty.
Applications
•riddles •Fryers
•Convection ovens •Conveyor ovens
•Steamers •Holding cabinets
•Toaster ovens •Dishwashers/warewashers
Watlow®is a registered trademark of Watlow Electric Manufacturing Compan .
UL®and C-UL®are registered trademarks of Underwriter's Laboratories, Inc.
Ultem®is a registered trademark of General Electric Compan .
E - S A F E ®I I H Y B R I D P O W E R S W I T C H
Features and Benefits
ercury-free hybrid power switch
•Improves safety by eliminating risk of toxic metals in
conjunction with food
•Adheres to federal and state regulations of phase out and
banning programs of mercury
High ambient temperature rating of 70°C (158°F)
•Specifically designed to operate in the higher ambient
temperatures of foodservice applications
NO-ARC technology
•Combines hybrid solid state technology and mechanical
output
•Allows faster cycling times
•Delivers more precise temperature control, saves energy,
extends heater life and creates a lower lifetime cost
Compact and touch-safe package
•Fits in shallow foodservice cabinets
•Allows for horizontal or vertical mounting installations
•Increases safety for installer/operator
•Uses Ultem®enclosure material with an HB rating of
170°C (338°F) and a UL®flame retardant rating of 94 5VA
RoHS compliant by design
•Specifically designed to meet Asian and European
requirements
LED indicator light
•Indicates command signal presence from controller
•Assists in trouble shooting
Agency approvals
•UL®recognition, C-UL®and CE
•WEEE compliant
© 2007, 2008 Watlow Electric anufacturing Company
WIN-ESRII-0608
ultiple U.S. and International Patents Pending

Ordering Information
ES2_-____-____
E-SAFE II = Hybrid Power Switch
Number of Poles
1=1 pole
2=2 poles controlled
3=3 poles controlled
Load Voltage
1=100 to 120VÅ(ac)
2=200 to 240VÅ(ac)
3=230/277VÅ(ac) [400/480VÅ(ac) with
wye/star, neutral connected to center
required]
Command Signal Voltage
LV = Low voltage 3 to 24VÎ(dc) or 24VÅ(ac)
HV = High voltage 100 to 240VÅ(ac)
+10/-15%, [85 to 264VÅ(ac)]
Future Option
Future Option
Custom Parameters
000 = Standard product
Any three letters or numbers = cosmetic options
Specifications
Output voltage
•200/240VÅ(ac) +10/-15%, 50/60Hz, 100/120VÅ(ac)
+10/-15%, 50/60Hz
Output amperage
•Up to 35A single, dual and three-phase
Operating environment
•0 to 70°C (32 to 158°F) operating temperature
•0 to 90% RH, non-condensing
•Operational life: four million switching cycles
•Installation category III, pollution degree 2
Control mode
•NO-ARC hybrid contactor
Input command signal
•3 to 32VÎ(dc), 24VÅ(ac) +20/-20%, off state ≤2.7VÎ(dc)
•100 to 240VÅ(ac) +10/-15%, [85 to 264VÅ(ac)]
N te: On the 100 t 240VÅ(ac) input m dels, d n t use
a RC snubber n the E-SAFE II relay input r the
temperature c ntr l c mmand signal utput.
LED indicator light
•Built in LED assists in trouble shooting; LED "off" indicates
relay(s) are open, LED "on" indicates relay(s) are closed.
Input command signal terminals
•1⁄4in. fast on appliance
Line and load terminals
•No. 10 screw will accept ring or spade,
6.35 mm (1⁄4in.) x 10-32
ounting
•Back panel mount, horizontal or vertical mounting options
6.35 mm
(0.25 in.)
97.03 mm
(3.82 in.)
82.55 mm
(3.25 in.)
140.72 mm
(5.54 in.)
48.51 mm
(1.910 in.)
14.88 mm
(0.586 in.)
46.99 mm
(1.85 in.)
23.88 mm
(0.94 in.)
00
60
Amperage
Dimensional Drawings
Ambient Temperature °C
510 15 20 25 30* 35
65
70
55
50
45
40
35
30
25
UL®Conditions of Acceptability
Applications must be tested as described below for specific wire
insulation or specific wire gauge sizes. Tests shall be performed in
the end application under worst case operating conditions.
Test Procedure
A. Monitor temperatures of terminals, using thermocouples between the
ring terminal and connectors L1, L2 or L3. The temperature must not
exceed 95°C (203°F).
B. Monitor temperatures of wire insulation, using a thermocouple located
three inches from the connector. The temperature must not exceed
the insulation rating of the wire.
*30A is maximum rating when operating above 240VÅ(ac).
Warning: Thermocouples attached to terminals will be at load voltage
potential, measurements need to be taken with isolated equipment or
isolate the sensor from terminal with suitable insulation.
8 AWG 90°C Wire
10 AWG 90°C Wire
6 AWG
90°C Wire
These ratings apply to
3-phase units with cycle
times of 30 seconds or
more. Consult the
factory for 1- and
2-phase unit ratings.
Product Rating Curve
To be automatically connected to the nearest North American Technical Sales Office:
1-800-WATLOW2 • www.watlow.com • [e-mail]
International Technical Sales Offices: Australia, [phone] • China, [phone] • France, [phone] •
Germany, [phone] • Italy, [phone] • Japan, [phone] • Korea, [phone] • alaysia, [phone] •
exico, [phone] • Shanghai, [phone] • Singapore, [phone] • Spain, [phone] • Sweden, [phone] •
Taiwan, [phone] • United Kingdom, [phone]