Circuit Breaker Thermal Magnetic 3CU25L Equivalent & Substitute Parts

Part Overview

The 3CU25L is a three-pole thermal magnetic circuit breaker rated for 25A at 480V AC/DC with lever actuation and DIN rail mounting. This component is classified as obsolete, making identification of equivalent substitute parts essential for system maintenance, repair, and component replacement in industrial control applications. The thermal magnetic design provides protection against both overload and short-circuit conditions in three-phase power distribution systems.

Substiute Parts

3CU25L

Altech CorporationIn Stock: 11113CU25L Datasheet

Current PartRFQ

3C25UL

Altech CorporationIn Stock: 8593C25UL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3CU25L is determined by strict equivalence across the following critical parameters:

• Current Rating: 25A (exact match required)
• Voltage Rating: 480V AC (exact match required)
• Number of Poles: 3 (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Actuator Type: Lever (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Approval Agencies: CE, cULus, UL489 (certification compliance required)

The 3C25UL meets all substitution criteria as an active equivalent part from the same manufacturer, differing only in series designation (UL versus L) and product status.

Parameter Comparison

Engineering Selection Recommendations

The 3C25UL is a direct functional equivalent to the 3CU25L. Both components share identical electrical ratings, mechanical specifications, and regulatory certifications. The primary distinction is product status: the 3CU25L is obsolete while the 3C25UL is active and currently available in inventory (824 pcs in stock). Both parts maintain ROHS3 compliance and carry equivalent approval certifications (CE, cULus, UL489), ensuring regulatory compliance in industrial applications. Selection of the 3C25UL is appropriate for new installations, repairs, and system upgrades where the 3CU25L is no longer procurable.

Frequently Asked Questions (FAQ)

Q: Can the 3C25UL directly replace the 3CU25L in existing installations?

A: Yes. The 3C25UL is electrically and mechanically equivalent to the 3CU25L. Both are three-pole thermal magnetic circuit breakers rated for 25A at 480V AC/DC with lever actuation and DIN rail mounting. All regulatory certifications are identical.

Q: What is the difference between the 3CU25L and 3C25UL?

A: The parts differ in series designation (L versus UL) and product status. The 3CU25L is obsolete; the 3C25UL is active. All electrical, mechanical, and certification parameters are identical.

Q: Are there packaging differences between these parts?

A: The 3CU25L is supplied with standard packaging; the 3C25UL is supplied in bulk packaging. This distinction does not affect functional performance or compatibility.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the 3CU25L and 3C25UL carry identical approval certifications: CE, cULus, and UL489. Both are ROHS3 compliant.

Q: Which part should be specified for new designs?

A: The 3C25UL should be specified for new designs and procurement. It is the active equivalent with current manufacturer support and inventory availability.