1C8UM 8A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 1C8UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 8A current with 480 V AC and 42 V DC voltage ratings. This DIN rail-mounted breaker features a lever actuator and is designed for single-pole protection applications. The product is currently active and maintains full inventory availability with 810 units in stock. Equivalent and substitute parts are identified when identical electrical and mechanical parameters are maintained across the V-EA series, ensuring direct interchangeability in existing installations.

Substiute Parts

1C8UM

Altech CorporationIn Stock: 9101C8UM Datasheet

Current PartRFQ

1D8UM

Altech CorporationIn Stock: 10091D8UM Datasheet

Parametric EquivalentRFQ

1E8UM

Altech CorporationIn Stock: 10961E8UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1C8UM is determined by the following critical parameters: current rating (8A), breaker type (thermal magnetic), mounting configuration (DIN rail), actuator mechanism (lever), pole count (1), and regulatory compliance certifications. The 1D8UM qualifies as a parametric equivalent, maintaining all electrical and mechanical specifications identical to the 1C8UM while differing only in base product designation. The 1E8UM is classified as a partial equivalent due to a reduced AC voltage rating of 277 V compared to the 1C8UM's 480 V AC specification, making it suitable only for applications operating within the lower voltage envelope.

Parameter Comparison

Engineering Selection Recommendations

The 1D8UM provides full parametric equivalence to the 1C8UM and is suitable for direct replacement in all applications where the 1C8UM is currently deployed. Both parts maintain identical electrical specifications, mechanical form factor, and regulatory certifications (CSA, UL508, VDE). The 1E8UM is restricted to applications operating at 277 V AC or lower and should not be used as a substitute in systems designed for 480 V AC operation. All three parts maintain active product status and ROHS3 compliance, ensuring continued availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can the 1D8UM replace the 1C8UM in a 480 V AC circuit? A: Yes. The 1D8UM maintains identical voltage ratings (480 V AC, 42 V DC) and all other electrical and mechanical parameters, making it a direct substitute.

Q: Is the 1E8UM compatible with 480 V AC applications? A: No. The 1E8UM is rated for 277 V AC maximum, which is below the 480 V AC requirement of the 1C8UM. Using it in a 480 V AC circuit exceeds its voltage rating.

Q: What are the key parameters that determine substitutability? A: Current rating (8A), voltage ratings (AC and DC), breaker type (thermal magnetic), mounting type (DIN rail), actuator type (lever), pole count (1), and regulatory certifications must remain constant for direct substitution.

Q: Are all three parts available in the same packaging? A: Yes. The 1C8UM, 1D8UM, and 1E8UM are all supplied in bulk packaging.

Q: Do all substitute parts carry the same regulatory certifications? A: The 1C8UM and 1D8UM both carry CSA, UL508, and VDE certifications. The 1E8UM carries CSA and UL508 certifications, with VDE certification not listed.