Circuit Breaker Thermal Magnetic 1A Altech Corporation 1CU1L

Part Overview

The 1CU1L is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 1A at 277V AC and 125V DC with lever actuation on DIN rail mounting. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for system maintenance, repair, and component sourcing in applications where the original part is no longer readily available through standard distribution channels.

Substiute Parts

1CU1L

Altech CorporationIn Stock: 8061CU1L Datasheet

Current PartRFQ

1C1UL

Altech CorporationIn Stock: 10851C1UL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1CU1L is determined by the following critical parameters that must remain constant:

• Current Rating: 1A
• Breaker Type: Thermal Magnetic
• Mounting Type: DIN Rail
• Actuator Type: Lever
• Number of Poles: 1
• Voltage Rating - AC: 277V
• Approval Agencies: CE, cULus, UL489

The substitute part 1C1UL meets all these core electrical and mechanical requirements. While the 1C1UL operates at 277V AC without a specified DC voltage rating in the provided data, it maintains functional equivalence for AC applications at the specified voltage and current parameters. The 1C1UL is classified as active product status, ensuring ongoing availability and support.

Parameter Comparison

Engineering Selection Recommendations

The 1C1UL serves as the direct functional equivalent for the obsolete 1CU1L. Both components share identical electrical ratings for AC operation at 1A and 277V, matching mechanical specifications including DIN rail mounting and lever actuation, and maintain equivalent regulatory compliance through CE, cULus, and UL489 certifications. The 1C1UL's active product status provides assurance of continued manufacturing support and component availability. Both parts maintain ROHS3 compliance and equivalent environmental classification. Selection of the 1C1UL eliminates obsolescence risk while preserving all specified electrical and mechanical performance characteristics required for the application.

Frequently Asked Questions (FAQ)

Q: Can the 1C1UL directly replace the 1CU1L in existing installations?

A: Yes. Both components are rated for 1A at 277V AC with identical DIN rail mounting, lever actuation, and single-pole configuration. Regulatory certifications are equivalent across both parts.

Q: What is the primary difference between these two parts?

A: The 1CU1L is classified as obsolete, while the 1C1UL maintains active product status. The 1CU1L specifies 125V DC rating; the 1C1UL data provided does not include a DC voltage specification. For AC-only applications at 277V, this distinction does not affect compatibility.

Q: Are there packaging differences between the 1CU1L and 1C1UL?

A: The 1CU1L is supplied with standard packaging, while the 1C1UL is supplied in bulk packaging. Both are suitable for component installation; packaging selection depends on order quantity and inventory management requirements.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the 1CU1L and 1C1UL carry CE, cULus, and UL489 approvals, ensuring compliance with equivalent safety and performance standards.

Q: Is the 1C1UL suitable for DC applications?

A: The provided specifications for the 1C1UL do not include a DC voltage rating. For applications requiring DC operation, the original 1CU1L specification of 125V DC should be verified against the 1C1UL datasheet before selection.