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3L12 Bimetal Disc Thermostats

White-Rodgers 3L12 Bimetal Disc Thermostats are manual reset discs with quarter-inch quick-connect terminations. These thermostats feature loose-ring and stainless steel mounting brackets with a 90° orientation to mounting holes. These SPST thermostats are available with 15A at 120V_AC and 10A at 240V_AC resistive ratings. The pilot duty rating for switching is 125VA. White-Rodgers 3L12 thermostats are designed for safety in gas-fired furnaces, unit heaters, and roof-top units.

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Part #

Thermostats Safety Switch-Manual Reset,OpenOnRise130

3L12-130
White-Rodgers
1: $18.95
159In Stock

Mfr. Part No.
3L12-130

Mouser Part No
802-3L12-130

Thermostats Safety Switch-Manual Reset,OpenOnRise130

Datasheet

159In Stock

$18.95

$17.21

$16.82

$15.62

View

Min.: 1
Mult.: 1

Thermostats Safety Switch-Manual Reset,OpenOnRise 135

3L12-135
White-Rodgers
1: $19.54
3In Stock

Mfr. Part No.
3L12-135

Mouser Part No
802-3L12-135

Thermostats Safety Switch-Manual Reset,OpenOnRise 135

Datasheet

3In Stock

$19.54

$17.22

$16.21

$15.05

View

Min.: 1
Mult.: 1

Open on Rise

135 F

Manual

15 A

120 VAC

Thermostats

Thermostats Safety Switch-Manual Reset,OpenOnRise 300

3L12-300
White-Rodgers
1: $19.92
19In Stock

Mfr. Part No.
3L12-300

Mouser Part No
802-3L12-300

Thermostats Safety Switch-Manual Reset,OpenOnRise 300

Datasheet

19In Stock

$19.92

$16.47

$15.83

$14.94

View

Min.: 1
Mult.: 1

Open on Rise

300 F

Manual

15 A

120 VAC

Thermostats

Thermostats Safety Switch-Manual Reset,OpenOnRise 220

3L12-220
White-Rodgers
1: $17.79
2In Stock

Mfr. Part No.
3L12-220

Mouser Part No
802-3L12-220

Thermostats Safety Switch-Manual Reset,OpenOnRise 220

Datasheet

2In Stock

$17.79

$15.16

$14.64

$13.83

View

Min.: 1
Mult.: 1

Open on Rise

220 F

Manual

15 A

120 VAC

Thermostats

Thermostats Safety Switch-Manual Reset,OpenOnRise 24

3L12-240
White-Rodgers
1: $22.05
2In Stock

Mfr. Part No.
3L12-240

Mouser Part No
802-3L12-240

Thermostats Safety Switch-Manual Reset,OpenOnRise 24

Datasheet

2In Stock

$22.05

$17.81

$17.07

$16.10

View

Min.: 1
Mult.: 1

Thermostats Safety Switch-Manual Reset,OpenOnRise 35

3L12-350
White-Rodgers
1: $22.71
11Expected 6/7/2026

Mfr. Part No.
3L12-350

Mouser Part No
802-3L12-350

Thermostats Safety Switch-Manual Reset,OpenOnRise 35

Datasheet

11Expected 6/7/2026

$22.71

$18.46

$17.39

$16.39

View

Min.: 1
Mult.: 1

Open on Rise

350 F

Manual

15 A

120 VAC

Thermostats

Thermostats Safety Switch-Manual Reset,OpenOnRise 230

3L12-230
White-Rodgers
1: $23.66
N/A

Mfr. Part No.
3L12-230

Mouser Part No
802-3L12-230

Thermostats Safety Switch-Manual Reset,OpenOnRise 230

Datasheet

N/A

$23.66

$18.82

$18.06

$17.06

View

Min.: 1
Mult.: 1

Open on Rise

230 F

Manual

15 A

120 VAC

Thermostats

Thermostats Safety Switch-Manual Reset,OpenOnRise 250

3L12-250
White-Rodgers
1: $21.10
N/A

Mfr. Part No.
3L12-250

Mouser Part No
802-3L12-250

Thermostats Safety Switch-Manual Reset,OpenOnRise 250

Datasheet

N/A

$21.10

$16.89

$16.24

$15.33

View

Min.: 1
Mult.: 1

Open on Rise

250 F

Manual

15 A

120 VAC

Thermostats

Thermostats Safety Switch-Manual Reset,OpenOnRise 26

3L12-260
White-Rodgers
1: $27.30
N/A

Mfr. Part No.
3L12-260

Mouser Part No
802-3L12-260

Thermostats Safety Switch-Manual Reset,OpenOnRise 26

Datasheet

N/A

$27.30

$21.17

$20.32

$19.24

View

Min.: 1
Mult.: 1

Open on Rise

260 F

Manual

15 A

120 VAC

Thermostats

Thermostats Safety Switch-Manual Reset,OpenOnRise 301

3L12-301
White-Rodgers
1: $22.11
Non-Stocked

Mfr. Part No.
3L12-301

Mouser Part No
802-3L12-301

Thermostats Safety Switch-Manual Reset,OpenOnRise 301

Datasheet

Non-Stocked

$22.11

$18.13

$17.26

$16.10

View

Min.: 1
Mult.: 1

Open on Rise

300 F

Manual

15 A

120 VAC

Thermostats