Genuine Onan 30-amp circuit breaker kit for select RV generator applications requiring two 30-amp single-pole, single-throw breakers.
The Cummins Onan 320-1572 is a 30-amp circuit breaker kit used on select Onan RV generator applications. It is designed for installations where a 20-amp breaker is being replaced and two 30-amp single-pole, single-throw breakers are required.
This kit is commonly listed for select Emerald Advantage, RV QG, Marquis Platinum, and Marquis Gold generator models. Because generator electrical configurations vary by model and spec, the generator nameplate and existing breaker setup should be verified before ordering.
Replacement circuit breaker kit for compatible Onan RV generator applications
Designed for select Cummins Onan generator electrical panel configurations
Commonly listed for select RV QG, Emerald Advantage, Marquis Gold, and Marquis Platinum models
Generator model and spec letter should be verified before ordering
This circuit breaker kit is not universal for all Onan generators. It is intended for specific generator configurations where two 30-amp single-pole, single-throw breakers are required. Before ordering, verify your generator model, spec letter, voltage/output configuration, and existing breaker arrangement. Electrical parts should be installed only by qualified personnel familiar with RV generator service and 120V AC electrical systems.
Before Starting: Shut down the generator, disconnect applicable power sources, and follow all Cummins Onan and RV electrical safety procedures. Generator electrical service should be performed by qualified personnel. Basic Replacement Steps: 1. Confirm Compatibility: Verify the generator model, spec letter, and existing breaker configuration before removing parts. 2. Disconnect Power: Make sure the generator cannot start and that AC output power is safely disconnected before service. 3. Access Breaker Panel: Remove the required generator access cover or control panel cover to reach the breaker assembly. 4. Document Wiring: Take clear photos of existing breaker wiring and terminal positions before disconnecting wires. 5. Remove Existing Breaker: Carefully disconnect wiring and remove the old breaker from the panel. 6. Install Replacement Kit: Install the 30-amp breaker kit according to the applicable Cummins Onan instructions and generator service information. 7. Reconnect Wiring: Reconnect conductors exactly as required for the generator’s output configuration. 8. Test Operation: Reassemble the panel, start the generator, and verify proper output and breaker operation.
Package Contents: • Cummins Onan 320-1572 30-amp circuit breaker kit NOT Included — May Also Need: • Generator control panel cover • Wiring harness or replacement conductors • Additional terminals or connectors • Generator control board • Transfer switch or RV distribution panel parts Confirm the existing breaker configuration and inspect wiring before beginning installation. Damaged wiring or terminals may require additional repair parts.
To confirm compatibility before ordering, have the following ready: • Generator model number • Spec letter • Serial number • Existing breaker rating and layout • Generator voltage/output configuration • Whether the generator is Emerald Advantage, RV QG, Marquis Platinum, or Marquis Gold series Why this matters: Onan breaker kits depend on the generator model, spec, and electrical output configuration. Matching only the amp rating may not be enough to confirm fit.
Match this circuit breaker kit by generator model, spec letter, and breaker configuration. Amp rating alone is not enough to confirm compatibility.
Repeated breaker trips or heat damage should be diagnosed before replacing parts. A breaker may trip because it is doing its job and protecting the generator from an overload or downstream electrical fault.