Mechanical Products Circuit Breakers

Mechanical Products circuit breakers
Mechanical Products Distributor

Mechanical Products Circuit Breakers

Waterproof, ignition-protected, push-to-reset, auto-reset, and switchable circuit breakers for marine, commercial vehicle, defense, off-road, and industrial applications.

✓ Chief Enterprises is listed as an Authorized Distributor

Shop by application or breaker type

Find the Right MP Circuit Breaker

Select the circuit breaker category that matches your application, then choose the Mechanical Products series that best fits your current range, reset type, and protection needs.

High-Amp Waterproof Breakers

For high-current DC protection in marine, commercial vehicle, and severe-duty systems.

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Series 17 — 20–300A, IP67, ignition protected Series 19 — 25–200A, IP67/IP69K, switchable options

Push-to-Reset Circuit Breakers

Resettable supplementary protectors for panels, compact systems, and OEM equipment.

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Series 16 — 0.5–70A, UL1500, motor-rated options Series 32 — 3–50A, compact, IP66 body Series 14 — 3–20A, compact supplementary protection

Switchable / Manual Reset Breakers

For applications that need manual reset or switching functionality.

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Series 19 — high-amp waterproof Type I / Type III options

Battery Disconnect + Circuit Protection

For branch disconnect protection and battery circuit protection applications.

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Series 53 — 10–70A, disconnect + breaker, IP66 Series 67 — battery disconnect and circuit protection

Marine / Ignition-Protected Breakers

For boat electrical systems and ignition-protected circuit protection needs.

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Series 17 — waterproof high-amp marine protection Series 19 — waterproof severe-duty protection Series 53 — disconnect + breaker protection Series 16 — panel-mounted ignition-protected options

Compact Low-Amp Breakers

For space-constrained systems that need compact resettable circuit protection.

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Series 32 — 3–50A, small push-to-reset breaker Series 14 — 3–20A, compact supplementary protector Series 16 — 0.5–70A, panel-mounted options

Not sure which MP series is right for your application?

Ask Chief Engineering  |  Shop All Mechanical Products

Compare MP Circuit Breaker Series

Series Current Range Voltage Reset / Switching Type Protection Highlights Best Fit
14 3–20A AC/DC Push-to-reset UL1500 ignition protected Compact supplementary protection
16 0.5–70A AC/DC Push-to-reset UL1500, motor-rated options Panel-mounted protection
17 20–300A DC Auto/manual reset options IP67, ignition protected High-amp waterproof
18 5–70A AC/DC Push-to-reset Weatherproof, UL1500 Harsh environments
19 25–200A DC Type I / Type III IP67/IP69K, ignition protected Severe-duty high amp
32 3–50A DC Push-to-reset Compact, IP66 body Small breaker applications
53 10–70A DC Disconnect + breaker IP66, ignition protected Branch disconnect protection
Applications

Common Applications

Mechanical Products circuit breakers support demanding OEM electrical systems across vehicle, marine, power generation, and industrial applications.

Agricultural equipment circuit breakers

Agricultural

Construction and forestry equipment circuit breakers

Construction & Forestry

Powersports circuit breakers

Powersports

Medium and heavy-duty truck circuit breakers

Commercial Vehicles

RV and bus circuit breakers

RVs & Bus

Marine circuit breakers

Marine

Power generation circuit breakers

Power Generation

Specialty vehicle circuit breakers

Specialty Vehicles

Why Source Mechanical Products Circuit Breakers from Chief?

Supply Flexibility

  • Small and large quantity releases available
  • 300+ items available on webstore
  • Authorized Chief Enterprises MP distributor

Engineering Support

  • Technical support from on-staff engineers
  • Cross-reference help available
  • Application and product selection support

Value-Added Services

  • Custom kits and ready-to-install assemblies
  • Custom packaging, labeling, and laser marking
  • Quality claims handled in-house at Chief USA

Resources

Engineering resources for Mechanical Products circuit breakers, including product selection support, datasheets, quote requests, and related circuit protection categories.

MP Product Selection Guide Product Guide
Download PDF →
Technical Questions Engineering Support
Contact Chief →
Request a Quote RFQ Support
Start RFQ →

Frequently Asked Questions

What is the difference between Type I, Type II, and Type III circuit breakers?

Type I circuit breakers automatically reset. Type II circuit breakers use a modified reset. Type III circuit breakers are manual reset or switchable reset depending on the product design.

Which MP circuit breakers are waterproof?

Series 17 and Series 19 are the primary waterproof MP circuit breaker families. Series 17 is listed as IP67, and Series 19 is listed as IP67/IP69K.

Which MP circuit breakers are ignition protected?

Ignition-protected options include Series 17, 18, 19, 53, 32, 14, 13, and 16, depending on the specific product configuration.

What amp ratings are available?
  • Series 17: 20–300A
  • Series 19: 25–200A
  • Series 18: 5–70A
  • Series 32: 3–50A
  • Series 16: 0.5–70A
  • Series 14: 3–20A
  • Series 12: 3–20A
  • Series 53: 10–70A
Can Chief help with MP kits or assemblies?

Yes. Chief can support custom kits, ready-to-install assemblies, custom packaging, labeling, and laser marking for Mechanical Products circuit breaker programs.

Need Help Selecting an MP Circuit Breaker?

Contact Chief’s engineering team to review your application, amp rating, reset type, environmental protection, and circuit protection requirements.