1
Temperature Switch
Heater-On
Out1
LT Cutout
Out2
2
3
4
5
6
7
8
9
10
11
A
H
O
UL Listed
Ground Fault
Circuit Breakers
(by others)
Field Wiring
(by others)
10' long
Sensor Lead
For 120V / 277
Applications
120V Input
For 208V / 240V
Applications
Ambient
Sensor
Bulb
L
N
L1
L2
L
N
To
Heater
Circuit
To
Heater
Circuit
To Heater Cable
Ground Braid
(Typical)
Ground
Bar
Ground
Factory
Wiring
A1
A2
X1
X2
H-O-A
Switch
Enclosure
L
Heater On Indicator Lamp
Multi-Circuit All-Contactor
Digital Controller
Switches 120V/208/240/277V 30A branch circuits,
wire per example as shown
Available in 4-, 8-, and 12-circuit configurations
NEMA Type 4/12 enclosure. Short circuit current: 5kA rms symmetrical, 480V Max.
Circuit 1: 120V 10A
protected circuit
breaker to be
provided by installer
Circuits 2 - 13: 30A, 30mA
ground fault equipment
protection circuit breakers to
be provided for each circuit by
installer (typical)
A1
A2
X1A
X2
X1A
X19
X19
X19
X19
X1
X1A
X19
X2
(Typical)
A1
A2
Ground Bar
Sized as
Required
xxx
Turn off all power before servicing
panel or branch circuits
CAUTION
HIGH VOLTAGE
DANGER
Note: Locate sensor on the coldest exterior side of structure (usually
north) under the overhang and not exposed to heat sources such as
sunlight, heating vents, etc. If using extension wiring for remote
placement of sensor bulb, use copper extension wire, 300Vac rated
insulation:
16 gauge up to 60' max.
14 gauge up to 120' max.
12 gauge up to 240' max.
10 gauge up to 480' max.
Important: DO NOT exceed maximum extension wire length
versus wire gauge
!
Terminals A1, A2, X1, X2:
Torque at 4.4-7.1 lb In.
Use copper conductors only with a
temperature rating of 60° F. for
terminals rated less than 100
amperes, and a temperature rating of
75° F. for terminals rated for 100
amperes or higher
