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SunGold Power 400 Amp DC Breaker

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SKU: DHM1B-400
$158.82

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The SunGold Power 400 Amp DC Breaker Provides Heavy-Duty Battery Disconnect and Overcurrent Protection

The SunGold Power 400 Amp DC Breaker (DHM1B-400) is a heavy-duty battery disconnect switch and DC circuit breaker. Its thermal magnetic trip mechanism protects against overloads and short circuits, and it isolates the battery bank when you need to service the system.

SunGold uses 400A DC breakers in its larger kits, such as the 12kW, 15kW, and 18kW off-grid systems, where inverter battery currents are highest. SunGold also lists it for marine uses such as boat trolling motor circuits.


SunGold Power 400 Amp DC Breaker Features

400 Amp Thermal Magnetic Breaker

Protects high-current battery cables from sustained overloads and short circuits.

Battery Isolation

Switch off to isolate large battery banks for maintenance or emergencies.

Front-Accessible Mounting

Installs in compartments with front access for easy operation.


Real-World Applications

Large inverter systems. Protect the battery to inverter connection on 12kW to 18kW systems.

Marine systems. Use as a battery disconnect for high-current marine loads.

UPS and data centers. Protect DC battery circuits.


How It Compares to Common Alternatives

Versus the 200 Amp breaker. The 200A model suits smaller inverters and lower currents.

Versus fuses. Breakers reset and double as disconnect switches.


Is This the Right Fit

  • Current. Match the breaker to your inverter's maximum DC current and cable ampacity.
  • Application. Suited to large 48V solar systems and high-current DC circuits.
  • Installation. Install per local electrical code.

Common Questions

Which SunGold Kits Use It?

SunGold lists a 400A DC breaker in its 12kW, 15kW, and 18kW off-grid kits.

What Does It Protect Against?

Overloads and short circuits.


What's Included

  • 1 x SunGold Power 400 Amp DC Breaker (DHM1B-400)

Complete Your System With the Right Parts

The SunGold Power 400 Amp DC Breaker is a small part of a solar or battery system, but the right components keep everything safe and working together. At Outbound Power, we help customers choose the right components to complete and protect their solar and battery systems. If you have questions, our team is happy to help.


SunGold Power 400 Amp DC Breaker Specifications

Model DHM1B-400
Rated Current 400A
Trip Type Thermal magnetic
Functions Overload protection, short circuit protection, circuit isolation
Applications Photovoltaic, UPS, battery, marine, data center DC systems

Common Customer Questions

Get answers to the most frequently-asked questions customers ask before placing an order.

Is Outbound Power an Authorized Dealer?

Yes! Outbound Power is an Authorized Dealer for every single brand and product on our store.

How long will it take for my order to arrive?

Shipping times vary depending on your location and the product or products ordered.

Order Processing Time
Most products are processed within 1-3 business days. If there is a delay in processing your order, we will alert you with as much information as possible about what to expect.

After order processing is complete, you will receive tracking information to monitor your order while it is in transit.

Order Shipping Time
Following processing, it may take between 3 and 8 days to arrive, depending on your location.

Please refer to the product page for your item and reference the estimated delivery time frame for more details.

Additionally, you can see the estimated delivery time frame during checkout and receive a tracking number once your order ships.

What are your shipping rates? Do you offer free shipping?

Everything on our store ships for free. Really!

What is Outbound Power's return policy?

Most items may be returned within 30 days of delivery. Please refer to our Returns & Exchanges policy to determine what items are eligible. Returns are not accepted beyond 30 days following delivery.

Are Outbound Power products used/old/refurbished?

Everything sold on our website is brand-new.

Do you price match?

No — we price BEAT! Please refer to our Price Beat Promise for full details.