Equivalent & Substitute Parts for 0MNB030.X

Part Overview

The 0MNB030.X is a 30A 12VDC automatic reset circuit breaker manufactured by Littelfuse Inc. in the MINI® series. This component is designed for holder-mounted applications requiring automatic reset functionality at 12V DC. The part is currently classified as obsolete, making identification of active equivalent alternatives essential for ongoing system support and procurement.

Substiute Parts

0MNB030.X

Littelfuse Inc.In Stock: 9710MNB030.X Datasheet

Current PartRFQ

BUCB030.Z

Littelfuse/Commercial Vehicle ProductsIn Stock: 1259BUCB030.Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0MNB030.X is determined by strict equivalence across the following critical parameters:

• Current Rating: 30A
• Voltage Rating - DC: 12V
• Actuator Type: Automatic Reset
• Number of Poles: 1
• Mounting Type: Holder
• RoHS Compliance: ROHS3 Compliant

The BUCB030.Z from Littelfuse/Commercial Vehicle Products meets all these requirements and is classified as an active product, making it a direct functional equivalent for the obsolete 0MNB030.X.

Parameter Comparison

Engineering Selection Recommendations

The BUCB030.Z is the direct substitute for the 0MNB030.X. Both components share identical electrical and mechanical specifications across all critical parameters. The BUCB030.Z maintains full compliance with ROHS3 and REACH requirements. As an active product with current manufacturing status, the BUCB030.Z provides assured long-term availability and supply chain continuity compared to the obsolete 0MNB030.X. The transition from MINI® series to UCB series represents a product line evolution within Littelfuse's circuit breaker portfolio while maintaining functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can BUCB030.Z be used as a direct replacement for 0MNB030.X?

A: Yes. Both components are rated for 30A at 12VDC with automatic reset functionality, single-pole configuration, and holder mounting. All electrical and mechanical parameters are identical.

Q: What is the difference between the MINI® and UCB series?

A: These represent different product series within Littelfuse's circuit breaker lineup. The UCB series (BUCB030.Z) is the active equivalent to the obsolete MINI® series (0MNB030.X). Functional specifications remain equivalent.

Q: Are there compliance differences between these parts?

A: No. Both components are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity ratings (MSL 1 - Unlimited).

Q: What packaging is available for BUCB030.Z?

A: The BUCB030.Z is supplied in bulk packaging.

Q: Why is 0MNB030.X classified as obsolete?

A: Product obsolescence reflects Littelfuse's transition to the UCB series. The BUCB030.Z provides the active equivalent with identical performance characteristics.