Recall 21V888 covers 847 2019-2021 Cummins Power Generation Generator Set units with inadequate circuit protection. Free repair at a franchised Cummins Power Generation dealer.
Cummins Power Generation is recalling 847 2019-2021 Generator Set trailer-mounted generator sets because certain molded case circuit breakers were manufactured improperly, leaving the equipment with inadequate circuit protection. That defect can increase the risk of personal injury or fire, and the Cummins Power Generation repair is free.
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What's wrong?
The 2019-2021 Cummins Power Generation Generator Set uses a Schneider Electric PowerPact L 250-600A molded case circuit breaker. That breaker is the heavy electrical switch that opens the circuit when current rises above its safe limit. On a trailer-mounted generator set, it helps protect wiring and connected equipment from excessive electrical load.
The supplier reported that the recalled breakers contain a nonconforming internal component. If that part does not work as designed, the breaker can fail to provide adequate circuit protection. Cummins later found that the generator controls include short-circuit protection features, but the recall still requires inspection because the suspect breaker date codes cannot be matched to specific generator set serial numbers.
There is no warning sign before failure. An owner or operator should not expect a visible symptom from the breaker before the defect is found during inspection.
Who's affected?
Covers Generator Set units from 2019, 2020, and 2021 model years using the same Schneider Electric PowerPact L circuit breaker.
| 2021 Cummins Power Generation Generator Set | wiring |
|---|---|
| 2019 Cummins Power Generation Generator Set | wiring |
| 2020 Cummins Power Generation Generator Set | wiring |
| Units affected | 847 |
| Field incidents | NHTSA has logged no field incidents to date. |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific vehicle is included.
What's the safety risk?
Inadequate circuit protection can increase the risk of personal injury or fire. There is no warning sign before failure, so stop using the generator set and arrange service promptly. Repair is free at any franchised Cummins Power Generation dealer.
What should I do?
- Check your VIN to confirm your 2019-2021 Cummins Power Generation Generator Set is included in this recall.
- Contact Cummins Power Generation customer service at 1-800-286-6467 to schedule the free circuit-breaker inspection.
- Schedule the molded-case circuit-breaker inspection and replacement that restores proper circuit protection.
- Bring the recall notice if Cummins Power Generation mailed one. If not, reference recall number 21V888 when you call.
- Operate the generator set only as instructed by Cummins Power Generation until the inspection is complete.
What happens at the repair
At the dealer, a Cummins Power Generation technician inspects the molded case circuit breakers and replaces any affected circuit breakers that need replacement. The inspection, replacement parts, and labor are free under recall 21V888. Warranty coverage applies to failures that happened during the limited warranty period. Cummins also has a recall-specific reimbursement plan for units that failed outside the warranty period, so keep invoices and repair paperwork and contact Cummins customer service about a claim.
| Reimbursement | Reimbursement available |
|---|
Timeline
| November 16, 2021 | NHTSA published the recall |
|---|---|
| January 14, 2022 | Owner notification mailed |
| January 14, 2022 | Dealer notification began |
| January 14, 2022 | Dealer notification ended |
| January 14, 2022 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 21V888?
Recall 21V888 covers 847 2019-2021 Cummins Power Generation Generator Set trailer-mounted generator sets with molded case circuit breakers that were manufactured improperly. The defect can leave the unit with inadequate circuit protection, increasing the risk of personal injury or fire.
What should I do if my 2019-2021 Cummins Power Generation Generator Set is on this recall?
Check your VIN to confirm your specific generator set is included in recall 21V888. If it is, contact Cummins Power Generation customer service at 1-800-286-6467 and reference Cummins recall C4776. Cummins will inspect the circuit breakers and replace them if needed for free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to correct the defect at no cost, and Cummins will inspect and replace the circuit breakers if needed free of charge. Use Cummins recall C4776 when arranging service.
What is the safety risk?
The safety risk is inadequate circuit protection. If the molded case circuit breakers do not protect the electrical system correctly, the generator set has an increased risk of personal injury or fire. The repair path is inspection and free circuit breaker replacement if needed.
When were owners notified about recall 21V888?
Cummins mailed owner notification letters on January 14, 2022. If you did not receive a letter, check your VIN to confirm whether your specific 2019-2021 Cummins Power Generation Generator Set is included, then contact Cummins customer service with recall number C4776.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V888000 |
|---|---|
| Cummins Power Generation customer service | 1-800-286-6467 |
| NHTSA recall # | 21V888 |
| NHTSA recall # (full) | 21V888000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Recall Report (PDF)
- Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →