Ten-Tec

Ten-Tec Model 1140 Mobile Circuit Breaker for Triton, 540 & 544 NEW in Box

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MPN:: 1140
Condition:: New
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$19.99

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Description

Description

Ten-Tec Model 1140 Mobile Circuit Breaker for Triton, 540 & 544 NEW in Box

Description

Magnetic DC circuit breaker permits 12 VDC operation of Models 540 and 544 transceivers. 18 A operating current and 24.3 A trip current. Mount in a 1/2" diameter hole. Manufactured by Airpax Electronics.

Ten-Tec Model 1140 Mobile Circuit Breaker is a vintage magnetic DC circuit breaker accessory from the late 1970s (introduced around 1978–1980), specifically designed for mobile/12VDC operation of certain Ten-Tec transceivers. It was primarily intended for the Triton IV Model 540 and Model 544 (and possibly other early solid-state rigs like the Century series in mobile setups). It mounts through a 1/2" diameter hole in the dashboard or panel, providing overcurrent protection for the DC power line to prevent damage from shorts, overloads, or faults.Key Details and Specifications

Type: Magnetic (instantaneous trip) DC circuit breaker.
Ratings: 18 A continuous operating current, 24.3 A trip current (provides headroom for peak loads while protecting wiring/transceiver).
Mounting: Panel-mount via 1/2" hole; includes mounting hardware.
Manufacturer: Produced by Airpax Electronics (Snapak series magnetic breaker, custom-labeled for Ten-Tec).
Purpose: Essential for safe mobile installations of Ten-Tec rigs without built-in breakers, replacing inline fuses with resettable protection.
Era: Late 1970s, part of Ten-Tec's mobile accessory line (paired with items like the 1170 mobile mount or similar).
Build: Compact, rugged panel-mount unit; no longer produced by Ten-Tec (they recommended Airpax T-11 series 20A fast-acting equivalents as replacements).