DaierTek Latching Reverse Polarity Toggle Switch, 12V 30A DPDT ON-OFF-ON, Pre-wired

$12.99

A maintained (latching) polarity-reversing switch with the cross-wiring already done: two leads in, two leads out, 14 AWG, waterproof boot included. The centre position is OFF. This is the switch behind our cooling/warming adapter build for Coleman thermoelectric coolers.

Last updated on September 19, 2026 3:31 pm
SKU: DAIERTEK-DPDT-LATCH Category: Brand:

Description

Most “reverse polarity” switches sold for RV jacks are momentary — they spring back to off when released. A thermoelectric cooler needs a switch that stays put, which is what latching means here: flip it to one side for cooling, the other for warming, centre for off.

Make sure you order the Latching style — the same listing also offers a momentary version, which will not work for a cooler.

Specifications

  • Type: DPDT toggle, polarity reversing, latching ON-OFF-ON (centre = off)
  • Rating: 30 A at 12 V DC; 15 A at 250 V AC
  • Pre-wired: reversing jumper bars fitted; four 14 AWG leads — red and black from the middle of the long side (supply), two blue from one end (load)
  • Included: waterproof toggle cap
  • Brand: DaierTek — order the Latching style, not Momentary
  • Cooler use: a Coleman thermoelectric cooler draws about 4 A, a fraction of this switch’s rating

Additional information

Mounting Type

DIN Rail Mount

Terminal

Dpdt

Voltage

12 volts, 250 volts

Current Rating (A)

30

Maximum Current (A)

30

Operating Voltage (volts)

12

Operation Mode

ON-OFF-ON

Contact Type

Latching

Circuit Type

DPDT

Compatible Devices

rv jack, dc motor, dc switch

Compatible with Vehicle Type

RV, Vehicle with DC Motor

Connector Type

Quick Connect

Control Type

Multi-state

Number of Positions

3

Switch Type

DPDT

Brand Name

DAIERTEK

Number of Packs

1

Manufacturer

DAIERTEK

Model

KN3C-203AP-4P+WPC-06

Unit Count (Count)

1

Part Number

KN3C-203AP-4P+WPC-06

ASIN

B0CRDQH7Y3

Material Type

Copper

Contact Material

Copper

Specification Met

CE