Circuit Breaker Thermal Magnetic 4420.038 - Equivalent & Substitute Parts

Part Overview

The SCHURTER 4420.038 is a 2-pole thermal magnetic circuit breaker rated for 50A at 480V AC and 65V DC, designed for DIN rail mounting with lever actuation. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and new installations where legacy specifications must be maintained.

The obsolete status necessitates sourcing equivalent models that preserve the critical electrical and mechanical characteristics required for safe operation within existing or equivalent electrical systems.

Substiute Parts

4420.038

SCHURTER Inc.In Stock: 11814420.038 Datasheet

Current PartRFQ

4230-T120-K0CU-50A

E-T-AIn Stock: 7754230-T120-K0CU-50A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 4420.038 is determined by strict equivalence across the following parameters:

• Current Rating: 50A (exact match required)
• AC Voltage Rating: 480V (exact match required)
• Breaker Type: Thermal Magnetic (functional equivalence)
• Number of Poles: 2 (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Actuator Type: Lever (exact match required)

The E-T-A 4230-T120-K0CU-50A satisfies all primary substitution criteria. The DC voltage rating differential (125V DC versus 65V DC) represents an upgrade in capability and does not compromise compatibility in applications specified for 65V DC operation.

Parameter Comparison

Engineering Selection Recommendations

The E-T-A 4230-T120-K0CU-50A is a direct functional substitute for the obsolete SCHURTER 4420.038. Both components maintain identical current and AC voltage ratings, pole configuration, and DIN rail mounting specifications. The active product status of the E-T-A component ensures ongoing availability and supply chain continuity.

Both components carry ROHS3 compliance and equivalent regulatory approvals under UL and CSA standards, supporting deployment in regulated industrial environments. The elevated DC voltage rating of the E-T-A component (125V versus 65V) provides enhanced capability margin without introducing incompatibility in systems designed for the original 65V DC specification.

Frequently Asked Questions (FAQ)

Q: Can the E-T-A 4230-T120-K0CU-50A directly replace the SCHURTER 4420.038 in existing installations?

A: Yes. Both components share identical current ratings (50A), AC voltage ratings (480V), pole count (2), mounting type (DIN rail), and actuator configuration (lever). Physical and electrical compatibility is maintained.

Q: What is the significance of the different DC voltage ratings?

A: The E-T-A component is rated for 125V DC compared to the SCHURTER component's 65V DC rating. This represents an upgrade in DC capability. In applications operating at or below 65V DC, the E-T-A component operates within its rated specification with additional margin.

Q: Are both components compliant with the same regulatory standards?

A: Both components are ROHS3 compliant. The SCHURTER component carries approvals under CSA C22.2 No 14, CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL1077, and UL508. The E-T-A component carries approvals under CSA C22.2 No 235 and UL489. Verify specific application requirements against the applicable approval standards for your installation.

Q: What is the packaging configuration for the substitute part?

A: The E-T-A 4230-T120-K0CU-50A is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Why is the SCHURTER component classified as obsolete?

A: Obsolete status indicates the component is no longer manufactured or supported by SCHURTER. The E-T-A 4230-T120-K0CU-50A maintains active product status, ensuring continued availability and technical support.