Newmar 20 Amp Single Pole Breaker W/ Black Throw
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Newmar 20 Amp Single Pole Breaker W/ Black Throw Product Description
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.
Standout Features for Superior Performance
- Magnetic-Hydraulic Trip-Free Design: Responds instantly to overloads and short circuits, holding the trip position until manually reset for enhanced safety.
- Robust Build Quality: UL recognized and CSA listed, meeting stringent AC and DC standards plus USCG specifications for marine-grade reliability.
- Versatile Voltage Handling: Rated up to 65 VDC or 277 VAC at 20 amps, ideal for a range of 12V, 24V, or 120/240V systems.
- Secure Connections: Equipped with #10 screw terminals on the rear for straightforward, vibration-resistant wiring.
- Customizable Aesthetics: Black throw handle blends seamlessly with modern panels, with options for red or white in similar models.
Seamless Fit and Easy Setup
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.
Quick Installation Steps
- Power down the circuit and verify with a multimeter.
- Snap the breaker into the designated panel slot.
- Secure with appropriate mounting screws.
- Connect wires to rear #10 terminals, torque to spec (typically 20-25 in-lbs).
- Test under load to confirm operation.
Pro tip: In humid marine environments, apply dielectric grease to terminals to fend off corrosion and ensure long-term conductivity.
Why It Excels in Real-World Use
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.
Common Applications
- Marine: Bilge pumps, lighting, and galley circuits.
- RV: AC outlets, fans, and water heaters.
- Off-Grid Solar: DC distribution for batteries and controllers.
Technical Specifications at a Glance
| 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.
Frequently Asked Questions
What makes the magnetic-hydraulic mechanism better than standard breakers?
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.
Is this 20 amp breaker suitable for DC marine systems?
Yes, rated to 65 VDC, it's perfect for 12V or 24V boat circuits, with USCG approval for reliable performance on vessels.
Does it fit panels from other manufacturers?
Absolutely, its standard form factor works with most competitive panels, simplifying replacements or expansions.
How do I know when to replace this breaker?
Monitor for frequent tripping, visible wear, or failure to hold position. Annual inspections in corrosive environments extend service life.
What accessories are needed for installation?
Mounting screws (order separately) and basic tools like a screwdriver. Use wire sized for 20 amps (e.g., 12 AWG) per NEC/ABYC guidelines.
Can I use it in high-vibration settings like boats?
Yes, the trip-free design and secure terminals withstand constant motion and shocks common in marine and off-road use.
What's the difference between single and double pole versions?
Single pole protects one line (hot), ideal for 120V circuits; double pole handles two (e.g., 240V), breaking both simultaneously.
Longevity Tips for Peak Reliability
- Inspect quarterly for heat marks or looseness.
- Clean contacts with electrical contact cleaner.
- Avoid exceeding 80% continuous load (16A max here).
- Pair with proper fusing upstream for layered protection.
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
- Feature magnetic-hydraulic "trip-free" mechanism
- 5-30 amp rated to 65 VDC or 277 VAC; 40, 50 amp rated to 32 VDC or 120 VAC (See rating note below).
- Mounting scrws not provide order separatly
- #10 screw terminals on rear for wiring
Options
- Red, white or black toggle handles
- Single pole values: 5, 10, 15, 20, 25, 30, 40 or 50 amp.
- Double pole values: 15, 20, 30 or 50 amp
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.
All circuit breakers provided by NEWMAR have passed UL certification and CSA certification, are suitable for AC and DC systems, and meet the requirements of USCG, and are qualified circuit protection equipment. Single and double...
SKU: NVN-1001131
MPN: 20ASB
UPC:
Frequently Asked Questions (FAQ) About Newmar 20 Amp Single Pole Breaker W/ Black Throw
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Buy with the best price Newmar 20 Amp Single Pole Breaker W/ Black Throw for only $58 from NVN Marine! Same day shipping before 3pm.
Newmar 20 Amp Single Pole Breaker W/ Black Throw Technical Specifications
| Type: | |
|---|---|
| Vendor: |
NewMar |
| Weight: |
1.0 lb |
Newmar 20 Amp Single Pole Breaker W/ Black Throw User Reviews
Newmar 20 Amp Single Pole Breaker W/ Black Throw Shipping & Return
| Shipping Weight: |
1.0 lb |
|---|---|
| Box Sizes: |
1.00 (h) x 1.00 (w) x 1.00 (l) |
| Cubic Feet: |
1.0 |
| Returnable: |
Yes |
| USPS First Class: |
Yes |
| P65: |
Yes |
For detailed shipping policy please check our Shipping Policy and you can find our Return and Refund Policy here.