SCHURTER 4420.02 Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The SCHURTER 4420.02 is a thermal magnetic circuit breaker rated for 40A 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 replacement applications. The part carries multiple international safety certifications including UL1077, UL508, IEC 60934, and CSA approvals, establishing its suitability for industrial control and distribution applications.

Substiute Parts

4420.02

SCHURTER Inc.In Stock: 11384420.02 Datasheet

Current PartRFQ

4230-T120-K0CU-40A

E-T-AIn Stock: 10884230-T120-K0CU-40A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 4420.02 is determined by strict equivalence across the following critical parameters:

• Current Rating: 40A (exact match required)
• Voltage Rating - AC: 480V (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Actuator Type: Lever (exact match required)
• Number of Poles: 2 (exact match required)
• Voltage Rating - DC: 65V minimum (substitute may exceed this rating)

The E-T-A 4230-T120-K0CU-40A meets all critical substitution criteria. While the DC voltage rating differs (125V DC versus 65V DC), the higher rating on the substitute part provides enhanced capability without compromising compatibility in applications designed for the original 65V DC specification.

Parameter Comparison

Engineering Selection Recommendations

The E-T-A 4230-T120-K0CU-40A (Series 4230-T) is an active product with current manufacturing status, providing supply continuity for applications requiring the SCHURTER 4420.02. Both components carry ROHS3 compliance and REACH unaffected status, meeting modern environmental and regulatory requirements.

The E-T-A substitute carries UL489 and CSA C22.2 No 235 certifications. While the original SCHURTER part includes additional certifications (UL1077, UL508, EN 60934, GB 17701, IEC 60934), the E-T-A part's UL489 certification covers industrial control circuit breaker applications. Verification of certification alignment with specific application requirements is necessary prior to deployment.

The elevated DC voltage rating (125V versus 65V) on the E-T-A part presents no compatibility issue for systems designed around the original 65V specification, as the substitute operates safely within the original design envelope.

Frequently Asked Questions (FAQ)

Q: Can the E-T-A 4230-T120-K0CU-40A directly replace the SCHURTER 4420.02 in existing installations?

A: Yes, provided that the application's certification requirements align with the E-T-A part's UL489 and CSA C22.2 No 235 approvals. The electrical and mechanical parameters are equivalent across all critical dimensions.

Q: Why does the E-T-A substitute have a higher DC voltage rating (125V versus 65V)?

A: Higher voltage ratings indicate enhanced capability. A 125V DC rated breaker operates safely in circuits designed for 65V DC operation. This represents a design improvement rather than a compatibility concern.

Q: Are both parts available in the same packaging format?

A: The SCHURTER 4420.02 is listed with packaging designation "-" (not specified). The E-T-A 4230-T120-K0CU-40A is supplied in Bulk packaging. Both are DIN rail mounted components with identical form factors.

Q: What is the significance of the SCHURTER part being obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The E-T-A 4230-T120-K0CU-40A, with active product status, provides a current manufacturing alternative for ongoing supply requirements.

Q: Do both parts carry equivalent environmental compliance?

A: Both parts are ROHS3 compliant and REACH unaffected. Environmental compliance is equivalent across both components.