Circuit Breaker Thermal Magnetic 1CU10L Equivalent & Substitute Parts

Part Overview

The 1CU10L is a single-pole thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 10A at 277V AC and 125V DC operation on DIN rail mounting. This component is classified as obsolete, making identification of active equivalent parts essential for system maintenance, repair, and new installations where legacy specifications must be maintained.

The thermal magnetic breaker type provides combined thermal and magnetic trip protection, suitable for general industrial and commercial electrical distribution applications. Due to its obsolete status, sourcing active alternatives with identical electrical and mechanical characteristics is necessary for procurement and design continuity.

Substiute Parts

1CU10L

Altech CorporationIn Stock: 11951CU10L Datasheet

Current PartRFQ

1C10UL

Altech CorporationIn Stock: 13591C10UL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1CU10L is determined by strict equivalence across the following critical parameters:

• Current Rating: 10A (exact match required)
• Voltage Rating - AC: 277V (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Actuator Type: Lever (exact match required)
• Number of Poles: 1 (exact match required)
• Approval Agencies: CE, cULus, UL489 (certification compliance required)

The 1C10UL meets all substitution criteria as an active equivalent. Both parts share identical electrical ratings, mechanical form factor, and regulatory certifications. The primary distinction is product status: 1CU10L is obsolete while 1C10UL is active, making the latter the preferred selection for new procurement.

Parameter Comparison

Engineering Selection Recommendations

The 1C10UL is the direct active equivalent for the obsolete 1CU10L. Both components are manufactured by Altech Corporation and carry identical electrical specifications, mechanical form factors, and regulatory certifications (CE, cULus, UL489). The 1C10UL is the appropriate selection for all applications where the 1CU10L was previously specified.

For systems currently operating with the 1CU10L, the 1C10UL provides functional and physical compatibility without modification to mounting hardware, wiring, or control logic. Both parts are ROHS3 compliant and suitable for industrial and commercial electrical distribution environments.

Frequently Asked Questions (FAQ)

Q: Can the 1C10UL directly replace the 1CU10L in existing installations?

A: Yes. The 1C10UL is mechanically and electrically identical to the 1CU10L. Both are single-pole thermal magnetic breakers rated for 10A at 277V AC, mounted on DIN rail with lever actuation. No modifications to the installation are required.

Q: What is the difference between the 1CU10L and 1C10UL?

A: The primary difference is product status. The 1CU10L is obsolete, while the 1C10UL is active. Both share the same electrical ratings, breaker type, mounting configuration, and regulatory certifications. The 1C10UL is the current production equivalent.

Q: Are both parts certified to the same standards?

A: Yes. Both the 1CU10L and 1C10UL carry CE, cULus, and UL489 certifications. Both are ROHS3 compliant.

Q: What packaging is available for the 1C10UL?

A: The 1C10UL is supplied in bulk packaging.

Q: Can I use the 1C10UL in DC applications?

A: The 1C10UL is rated for 277V AC operation. The 1CU10L includes a 125V DC rating. Verify DC application requirements against the 1C10UL specifications before selection.