SCHURTER 4420.0143 Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The SCHURTER 4420.0143 is a thermal magnetic circuit breaker rated for 25A at 277V AC and 65V DC, designed for DIN rail mounting with lever actuation. This component is classified as obsolete, making identification of equivalent substitute parts essential for system maintenance and component replacement in existing installations.

Substiute Parts

4420.0143

SCHURTER Inc.In Stock: 11064420.0143 Datasheet

Current PartRFQ

4420.0232

SCHURTER Inc.In Stock: 7824420.0232 Datasheet

Parametric EquivalentRFQ

2907574

Phoenix ContactIn Stock: 24332907574 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCHURTER 4420.0143 are identified based on strict electrical and mechanical parameter matching. The critical parameters that determine substitution eligibility are:

• Current Rating: 25A
• Voltage Rating - AC: 277V
• Voltage Rating - DC: 60V or 65V
• Breaker Type: Thermal Magnetic
• Mounting Type: DIN Rail
• Actuator Type: Lever
• Number of Poles: 1

Two substitute parts meet these criteria: the SCHURTER 4420.0232 (parametric equivalent) and the Phoenix Contact 2907574 (similar equivalent with minor DC voltage variance).

Parameter Comparison

Engineering Selection Recommendations

The SCHURTER 4420.0232 serves as the primary parametric equivalent, offering identical electrical ratings (25A, 277V AC, 65V DC) and mechanical specifications. Both SCHURTER parts maintain ROHS3 compliance and share the same approval certifications (CSA C22.2 No 14, CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL1077, UL508).

The Phoenix Contact 2907574 functions as a secondary equivalent with a 5V DC rating reduction (60V DC versus 65V DC). This part carries active product status and ROHS3 compliance. The lower DC voltage rating requires evaluation against specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 4420.0232 directly replace the 4420.0143?

A: Yes. Both parts share identical current ratings (25A), AC voltage ratings (277V), DC voltage ratings (65V), breaker type (thermal magnetic), mounting configuration (DIN rail), and actuator type (lever). They are parametric equivalents.

Q: What is the difference between the SCHURTER 4420.0143 and 4420.0232?

A: The primary difference is the series designation (AS168X versus AS168XAC1). Both parts are obsolete and maintain identical electrical and mechanical specifications.

Q: Can the Phoenix Contact 2907574 replace the SCHURTER 4420.0143?

A: The Phoenix Contact 2907574 matches all critical parameters except DC voltage rating, which is 60V instead of 65V. This 5V reduction must be evaluated against application requirements. The part is currently active in production.

Q: What certifications apply to these circuit breakers?

A: All three parts comply with CSA C22.2 No 14, CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL1077, and UL508 standards. The Phoenix Contact 2907574 does not list CSA certifications in the provided data.

Q: Are these parts RoHS compliant?

A: Yes. All three parts are ROHS3 compliant.

Q: What packaging options are available?

A: The SCHURTER 4420.0143 is supplied with standard packaging. The SCHURTER 4420.0232 is available in bulk packaging. The Phoenix Contact 2907574 is supplied in box packaging.