BREAKER CIRCUIT 30 AMPERES MAIN LIGHTS SWITCH

EARLY MBMBM201
Manual available
Price available when back in stock
SKU:  WOA1349
GTIN (EAN,ISBN): 0.7.6

WOA1349
10.4

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War Dept specs from the original Technical Manual — click to open

30 Ampere Circuit Breaker Headlights

For push-pull light switch

30 ampere thermal circuit breaker for lighting circuit protection. This circuit breaker mounts to the rear of the push-pull type headlight switch and protects headlamps and other lighting against overload. In case of overload, the breaker automatically trips and resets itself after cooling down.

Type

Thermal circuit breaker, automatic reset

Capacity

30 Ampere

Application

Headlight switch (push-pull type)

Mounting

To rear of light switch

Features

  • 30 Ampere capacity for 6V lighting system
  • Thermal protection with automatic reset
  • Protection against short circuit and overload
  • Prevents fire in case of electrical faults
  • Mounts directly to push-pull headlight switch

★ Essential safety component that protects the entire lighting circuit against overload. The automatic reset function ensures the circuit breaker resets itself automatically after cooling down.

Application

This 30 ampere circuit breaker is used on the early-type push-pull headlight switch of WWII military jeeps. The circuit breaker protects the entire lighting circuit — headlamps, tail lights and other lighting — against short circuits and overload. Fits vehicles with push-pull type light switch (primarily 1941-1944 production).

Installation notes

The circuit breaker mounts to the rear of the push-pull light switch. Electrical connection runs from the ammeter (driver's side) via the breaker to the headlight switch. When fitting, check the quality of all connections and ensure good contact surfaces to guarantee optimal operation.

Compatibility

Specific for push-pull type headlight switch. Later rotary-type switches may require a different amperage circuit breaker (often 15 ampere). Note: when converting to 12V system, a lower amperage breaker is required (approximately 15A) as 12V bulbs draw less current — a 30A breaker will trip too late or not at all in case of short circuit on 12V.

Historical context

The thermal circuit breaker was one of three circuit breakers on WWII jeeps — alongside breakers for fuel gauge (5-10A) and horn (15-20A). This protection was crucial to prevent fire hazard during demanding military use under extreme conditions.

This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.

⚠ Spotted an error in this description? Report it to info@willys.be

Restoration part — not a ready-to-fit product

This part is intended for the restoration of historic military vehicles. Fitting, aligning, deburring or reworking is part of that work and is inherent to the nature of these goods. Dimensional variation also exists between original vehicles.

Installation requires technical knowledge of the vehicle. Unsure whether this part suits your version? Ask us before purchase at info@willys.be.

COMPATIBLE_MODELS EARLY MB, MB, M201
ALL_CATEGORIES : 09 DASHBOARD MB/GPW, electricity dashboard dodge closed, electricity dashboard open cab

This part fits:

ModelYears
Military jeeps
Willys MB (early)1941, 1942
Willys MB1942, 1943, 1944, 1945
Hotchkiss M2011956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966

📐 Diagrams & technical drawings

From the original Technical Manual TM 10-1513 — Maintenance Manual — only for Willys MB / Ford GPW (1942)

Electrical System — Wiring, Distributor, Generator, Regulator, Starter
Electrical System — Wiring, Distributor, Generator, Regulator, Starter
Page 58–72

From the original Technical Manual TM 9-1803B — Ordnance Maintenance — Power Train, Body & Frame — only for Willys MB / Ford GPW (¼-ton 4×4)

Body
Body
Page 122–128