2CU4L 4A Thermal Magnetic Circuit Breaker Equivalent & Substitute Parts

Part Overview

The Altech Corporation 2CU4L is a 4A thermal magnetic circuit breaker rated for 480 V AC / 250 V DC operation with lever actuation and 2-pole configuration on DIN rail mounting. This component is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for direct replacement in existing installations.

Substiute Parts

2CU4L

Altech CorporationIn Stock: 12332CU4L Datasheet

Current PartRFQ

2C4UL

Altech CorporationIn Stock: 10162C4UL Datasheet

SimilarRFQ

2B4DL

Altech CorporationIn Stock: 11842B4DL Datasheet

Parametric EquivalentRFQ

2ZU4L

Altech CorporationIn Stock: 6582ZU4L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2CU4L is determined by the following mandatory parameters:

• Current Rating: 4A (exact match required)
• Voltage Rating - AC: 480 V (exact match required)
• Voltage Rating - DC: 250 V (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Number of Poles: 2 (exact match required)
• Actuator Type: Lever (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Approval Agencies: CE, cULus, UL489 (minimum compliance required)
• RoHS Status: ROHS3 Compliant (exact match required)

All identified substitute parts meet these criteria and are manufactured by Altech Corporation, ensuring compatibility with applications originally specified for the 2CU4L.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (2C4UL, 2B4DL, 2ZU4L) are active products with current manufacturing status, providing supply continuity for applications requiring the 2CU4L. Each substitute maintains full compliance with CE, cULus, and UL489 certifications, ensuring regulatory acceptance in jurisdictions requiring these approvals.

The 2B4DL and 2ZU4L provide complete parametric equivalence, including DC voltage rating specification. The 2C4UL offers AC voltage equivalence with unspecified DC rating; selection of this part requires confirmation that DC voltage operation is not required in the target application.

All substitutes are ROHS3 compliant, supporting environmental compliance requirements equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can the 2C4UL be used as a direct replacement for the 2CU4L?

A: The 2C4UL matches all critical AC parameters (480 V AC, 4A, 2-pole, thermal magnetic, lever, DIN rail). However, the 2C4UL does not specify a DC voltage rating, while the 2CU4L is rated for 250 V DC. Use 2C4UL only in applications where DC operation is not required.

Q: Are 2B4DL and 2ZU4L fully interchangeable with the 2CU4L?

A: Yes. Both parts match all electrical and mechanical parameters of the 2CU4L, including 480 V AC, 250 V DC, 4A current rating, 2-pole configuration, lever actuation, and DIN rail mounting. Both are active products with current inventory availability.

Q: Do all substitutes meet the same regulatory certifications?

A: Yes. All substitute parts carry CE, cULus, and UL489 approvals, matching the certification profile of the 2CU4L.

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

A: Series designations (L, UL, DL) identify product lines within the Altech Corporation portfolio. All three series share identical electrical and mechanical specifications for the 4A, 480 V AC / 250 V DC, 2-pole thermal magnetic breaker configuration.

Q: Are packaging differences relevant to substitution?

A: Packaging format (bulk vs. other configurations) does not affect electrical or mechanical compatibility. Selection should be based on procurement and inventory management requirements.