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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: $19.63
159In Stock

Mfr. Part #
3L12-130

Mouser Part #
802-3L12-130

Thermostats Safety Switch-Manual Reset,OpenOnRise130

Datasheet

159In Stock

$19.63

$17.83

$17.42

$16.19

View

Min.: 1
Mult.: 1

Thermostats Safety Switch-Manual Reset,OpenOnRise 135

3L12-135
White-Rodgers
1: $20.25
3In Stock

Mfr. Part #
3L12-135

Mouser Part #
802-3L12-135

Thermostats Safety Switch-Manual Reset,OpenOnRise 135

Datasheet

3In Stock

$20.25

$17.84

$16.79

$15.60

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: $20.64
19In Stock

Mfr. Part #
3L12-300

Mouser Part #
802-3L12-300

Thermostats Safety Switch-Manual Reset,OpenOnRise 300

Datasheet

19In Stock

$20.64

$17.06

$16.40

$15.48

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: $18.43
2In Stock

Mfr. Part #
3L12-220

Mouser Part #
802-3L12-220

Thermostats Safety Switch-Manual Reset,OpenOnRise 220

Datasheet

2In Stock

$18.43

$15.71

$15.16

$14.33

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: $22.84
2In Stock

Mfr. Part #
3L12-240

Mouser Part #
802-3L12-240

Thermostats Safety Switch-Manual Reset,OpenOnRise 24

Datasheet

2In Stock

$22.84

$18.45

$17.68

$16.68

View

Min.: 1
Mult.: 1

Thermostats Safety Switch-Manual Reset,OpenOnRise 35

3L12-350
White-Rodgers
1: $23.53
11Expected 2026-07-06

Mfr. Part #
3L12-350

Mouser Part #
802-3L12-350

Thermostats Safety Switch-Manual Reset,OpenOnRise 35

Datasheet

11Expected 2026-07-06

$23.53

$19.12

$18.01

$16.98

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: $24.51
N/A

Mfr. Part #
3L12-230

Mouser Part #
802-3L12-230

Thermostats Safety Switch-Manual Reset,OpenOnRise 230

Datasheet

N/A

$24.51

$19.50

$18.71

$17.67

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: $21.86
N/A

Mfr. Part #
3L12-250

Mouser Part #
802-3L12-250

Thermostats Safety Switch-Manual Reset,OpenOnRise 250

Datasheet

N/A

$21.86

$17.50

$16.82

$15.88

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: $28.28
N/A

Mfr. Part #
3L12-260

Mouser Part #
802-3L12-260

Thermostats Safety Switch-Manual Reset,OpenOnRise 26

Datasheet

N/A

$28.28

$21.93

$21.05

$19.93

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: $22.91
Non-Stocked

Mfr. Part #
3L12-301

Mouser Part #
802-3L12-301

Thermostats Safety Switch-Manual Reset,OpenOnRise 301

Datasheet

Non-Stocked

$22.91

$18.78

$17.88

$16.68

View

Min.: 1
Mult.: 1

Open on Rise

300 F

Manual

15 A

120 VAC

Thermostats