Which Value Circuit Breaker for Installing Primus IQ Brake Controller TK90160

Updated 03/25/2019 | Published 03/22/2019

Products Featured in This Question

Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires

(3475)

$118.67

Circuit Breaker - 30 Amp - Perpendicular Mount Bracket - Cycling Auto Reset - Metal - Type I

(34)

$10.61

Pollak Circuit Breaker - Cycling/Automatic Reset - 20 Amp - Straight Mount Bracket

(45)

$10.12

Question:

Question, When installing the wiring for a Primus IQ Brake Controller, where do they normal install/locate the 40A Auto Reset Circuit Breaker?

asked by: Walt F

Expert Reply:

When hardwiring a trailer brake controller like the Tekonsha Primus IQ # TK90160 either a 20-amp or 30-amp circuit breaker will provide operating power for the controller itself.

The choice depends on whether the trailer has one braked axle (use the 20-amp value # PK54520) or if it has two or three braked axles (use a 30-amp breaker # PK54230). The breaker should be mounted on the firewall, reasonably close to the battery positive terminal. The copper-colored terminal on the breaker connects to the battery.

We do include a 40-amp breaker in our Brake Controller Install Kit # ETBC7 and this one is for the 12V auxiliary power circuit on the 7-way which can power devices on the trailer. This value circuit breaker is not for the brake controller.

expert reply by: Adam R