Circuit Breaker Thermal Magnetic 15A Altech Corporation 1CU15L

Part Overview

The Altech Corporation 1CU15L is a thermal magnetic circuit breaker rated for 15A at 277V AC and 125V DC, designed for DIN rail mounting with lever actuation. This single-pole breaker is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing system maintenance and new installations where this specific model is no longer available through primary distribution channels.

Substiute Parts

1CU15L

Altech CorporationIn Stock: 8581CU15L Datasheet

Current PartRFQ

1C15UL

Altech CorporationIn Stock: 8971C15UL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 1C15UL qualifies as a direct substitute for the 1CU15L based on the following critical parameters that determine functional equivalence:

• Current Rating: Both rated at 15A
• Voltage Rating - AC: Both rated at 277V
• Breaker Type: Both thermal magnetic
• Mounting Type: Both DIN rail mount
• Actuator Type: Both lever actuated
• Number of Poles: Both single-pole (1)
• Approval Agencies: Both carry CE, cULus, and UL489 certifications
• Base Product Number: Both share the 1C15 base designation

The primary difference is that the 1C15UL is part of the active UL series and remains in production, whereas the 1CU15L (L series) is discontinued. The 1C15UL does not specify a DC voltage rating in the provided data, but maintains all AC specifications and thermal magnetic protection characteristics required for equivalent operation in standard applications.

Parameter Comparison

Engineering Selection Recommendations

The 1C15UL is the appropriate substitute for the discontinued 1CU15L. Both parts maintain identical electrical ratings for AC operation at 277V and 15A, share the same thermal magnetic protection mechanism, and carry equivalent regulatory certifications (CE, cULus, UL489). The 1C15UL's active product status ensures availability for procurement and ongoing supply chain support. Both parts comply with ROHS3 requirements and are suitable for DIN rail installations requiring single-pole thermal magnetic protection.

Frequently Asked Questions (FAQ)

Q: Can the 1C15UL directly replace the 1CU15L in existing installations?

A: Yes. Both parts are single-pole thermal magnetic circuit breakers with identical 15A current ratings, 277V AC voltage ratings, lever actuation, and DIN rail mounting. They carry the same regulatory approvals and comply with equivalent environmental standards.

Q: What is the difference between the L and UL series designations?

A: The L series (1CU15L) is discontinued, while the UL series (1C15UL) remains in active production. Both share the same 1C15 base product number and maintain equivalent electrical and mechanical specifications.

Q: Are there any voltage rating differences between these parts?

A: The 1CU15L specifies both 277V AC and 125V DC ratings. The 1C15UL provides 277V AC rating. For applications requiring DC operation at 125V, the DC rating specification should be confirmed with the manufacturer before substitution.

Q: Do both parts have the same physical dimensions for DIN rail mounting?

A: Both parts are designed for DIN rail mounting with lever actuation. Physical compatibility should be confirmed based on the specific DIN rail enclosure dimensions, though both follow standard DIN rail specifications.

Q: What certifications apply to both parts?

A: Both the 1CU15L and 1C15UL carry CE, cULus, and UL489 certifications, ensuring compliance with North American and European regulatory requirements for circuit protection devices.