Catalog Page

THERMOSTATS
LINE VOLTAGE
THERMOSTATS
1A65-641
1G65-641
1G66-633
LINE VOLTAGE BASEBOARD THERMOSTATS
Electric Heat Thermostats Used for Controlling Baseboards,Cable
Heat, Glass Panels, etc.
FEATURES
•1A66typesareadouble-poledisconnectmodelwith“OFF”positionwhich
 mechanicallybreaksbothsidesofline.
•ClassicWhiteorBeigecolor.
SPECIFICATIONS
Dimensions...................... 4
1
/
2
”H x 2
3
/
4
”W x 1
1
/
4
”D
Agency ......................... U.L.listedandC.S.A.certied
PARTS AND ACCESSORIES See end of thermostats section for additional parts and accessories
•F75-0176–forlockingorlimitingtemperaturesat66°, 69°, 72° or 75°F
Temperatures limit can also be set at 60° or 63°
•ThermostatGuards—seepages34–35
LINE VOLTAGE BIMETAL WALL THERMOSTATS
Electric Heat Thermostats Used for Controlling Baseboards,Cable
Heat, Glass Panels, etc.
FEATURES
•1G66typesareadouble-poledisconnectmodelwith“OFF”positionwhich
 mechanicallybreaksbothsidesofline.
•Classicwhite.
SPECIFICATIONS
Dimensions...................... 4
13
/
16
”H x 3
5
/
16
”W x 1
7
/
18
”D
Agency ......................... U.L.listedandC.S.A.certied
PARTS AND ACCESSORIES See end of thermostats section for additional parts and accessories
•ThermostatGuards—seepages34–35
Model
Number Range
Switch
Action Load
Resistive
(Non-Inductive)
1A65-641
40 to 85°F (4 to 29°C) 1.0°F Open on Rise
22.0A, 120 VAC (2500W)
22.0A, 240 VAC (5000W)
18.0A, 277 VAC (5000W)
1A65W-641 
1A66-641
40 to 85°F (4 to 29°C) 1.0°F Open on Rise
22.0A, 240 VAC (5000W)
18.0A, 277 VAC (5000W)
1A66W-641 
➀ W in model number denotes Classic White Color
REPLACES HONEYWELL T498A / B SERIES
Model
Number Range
Switch
Action Load
Resistive
(Non-Inductive)

1G65-633
4 to 26°C (40 to 80°F) 0.5°C Open on Rise
22.0A, 120 VAC (2500W)
22.0A, 240 VAC (5000W)
18.0A, 277 VAC (5000W)
1G65-641
40 to 80°F (4 to 26°C) 2.0°F Open on Rise
22.0A, 120 VAC (2500W)
22.0A, 240 VAC (5000W)
18.0A, 277 VAC (5000W)

1G66-633
4 to 26°C (40 to 80°F) 0.5°C Open on Rise
22.0A, 240 VAC (5000W)
18.0A, 277 VAC (5000W)
1G66-641
40 to 80°F (4 to 26°C) 2.0°F Open on Rise
22.0A, 240 VAC (5000W)
18.0A, 277 VAC (5000W)
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