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Equip your electrical system with reliable protection using the Newmar 20 Amp Single Pole Breaker featuring a distinctive black throw handle. Designed for demanding environments like marine vessels, RVs, and off-grid setups, this breaker delivers precise circuit safeguarding without compromise. Its trip-free mechanism ensures it resets only after the fault is cleared, preventing accidental overrides during critical moments.
This single-pole breaker slots perfectly into Newmar electrical panels and most competing brands, making upgrades hassle-free. Whether refreshing an older marine distribution board or building a custom RV setup, it mounts securely—note that screws are sourced separately for flexibility in hardware choices.
Pro tip: In humid marine environments, apply dielectric grease to terminals to fend off corrosion and ensure long-term conductivity.
Unlike basic thermal breakers, this model's magnetic-hydraulic action provides faster short-circuit response, protecting sensitive electronics like inverters, pumps, and navigation gear from damage. Boat owners rave about its durability in saltwater spray, while RV enthusiasts appreciate the compact footprint for tight panel spaces. Choose 20 amps for branch circuits powering lights, appliances, or accessories—perfect balance of capacity and protection.
| Attribute | Details |
|---|---|
| Amp Rating | 20 Amps (Single Pole) |
| Voltage Rating | 65 VDC / 277 VAC |
| Handle Color | Black Throw |
| Terminals | #10 Screw (Rear) |
| Certifications | UL Recognized, CSA Listed, USCG Compliant |
| Mechanism | Magnetic-Hydraulic Trip-Free |
Note: For systems over 30 amps, confirm compatibility with 230 VAC line-to-line setups (115 VAC leg-to-neutral), not direct 230 VAC line-to-neutral.
It combines magnetic instant response for short circuits with hydraulic delay for overloads, ensuring precise protection without nuisance tripping in variable loads like marine or RV applications.
Yes, rated to 65 VDC, it's perfect for 12V or 24V boat circuits, with USCG approval for reliable performance on vessels.
Absolutely, its standard form factor works with most competitive panels, simplifying replacements or expansions.
Monitor for frequent tripping, visible wear, or failure to hold position. Annual inspections in corrosive environments extend service life.
Mounting screws (order separately) and basic tools like a screwdriver. Use wire sized for 20 amps (e.g., 12 AWG) per NEC/ABYC guidelines.
Yes, the trip-free design and secure terminals withstand constant motion and shocks common in marine and off-road use.
Single pole protects one line (hot), ideal for 120V circuits; double pole handles two (e.g., 240V), breaking both simultaneously.
All circuit breakers offered by NEWMAR are UL recognized and CSA listed for AC and DC
systems and meet USCG requirements as a qualified circuit protection device.
Single and Double Pole
Fit all NEWMAR electrical panels, as well as most other brands
Options
Important Circuit Breaker Rating Note: Standard series breakers shown on this page which are rated higher than 30 amps are acceptable for use in 230 VAC Line-to-Line systems (where each leg is 115 VAC - to - neutral), but are not rated for 230 VAC line-to-neutral systems.
Ships within 48 hours · Estimated delivery Jun 26 - Jul 1
US$40
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