Circuit Breaker Thermal Magnetic 1A 277VAC 65VDC SCHURTER 4420.0531

Part Overview

The SCHURTER 4420.0531 is a single-pole thermal magnetic circuit breaker rated for 1A at 277V AC and 65V DC, designed for DIN rail mounting with lever actuation. This component is classified as obsolete, making equivalent substitutes necessary for ongoing system maintenance and new installations where this specific model is no longer available from primary sources.

Substiute Parts

4420.0531

SCHURTER Inc.In Stock: 7284420.0531 Datasheet

Current PartRFQ

4420.0595

SCHURTER Inc.In Stock: 7824420.0595 Datasheet

DirectRFQ

0914073

Phoenix ContactIn Stock: 8310914073 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCHURTER 4420.0531 is determined by the following critical parameters:

• Current Rating: 1A (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Number of Poles: 1 (exact match required)
• Actuator Type: Lever (exact match required)
• Voltage Rating - AC: 277V minimum
• Voltage Rating - DC: 65V minimum
• RoHS Compliance: ROHS3 Compliant

Two substitute parts meet these criteria with varying degrees of parameter alignment. The SCHURTER 4420.0595 is a direct manufacturer substitute within the same product family. The Phoenix Contact 0914073 is a similar part from an alternative manufacturer with a lower AC voltage rating of 250V, which represents a functional limitation in certain applications.

Parameter Comparison

Engineering Selection Recommendations

The SCHURTER 4420.0595 is the primary substitute for the 4420.0531. Both parts are manufactured by SCHURTER Inc., share identical electrical ratings at 277V AC and 65V DC, and maintain ROHS3 compliance. The 4420.0595 carries additional regulatory approvals including CSA C22.2 No 14, CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL1077, and UL508, providing broader certification coverage. Although both parts are classified as obsolete, the 4420.0595 offers superior documentation and compliance traceability for legacy system replacements.

The Phoenix Contact 0914073 is a functional alternative only for applications where the AC voltage requirement does not exceed 250V. This part operates at a reduced AC voltage rating compared to the original specification and should be selected only when system voltage constraints permit. The Phoenix Contact part carries active product status, ensuring continued availability and support. REACH compliance differs between manufacturers, with the Phoenix Contact part listed as REACH Affected.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 4420.0595 be used as a direct replacement for the 4420.0531?

A: Yes. Both parts share identical electrical specifications at 1A, 277V AC, and 65V DC with thermal magnetic operation on DIN rail mounting. The 4420.0595 is the manufacturer's designated substitute within the AS168X product family.

Q: What is the key limitation of the Phoenix Contact 0914073 substitute?

A: The Phoenix Contact 0914073 has a reduced AC voltage rating of 250V compared to the original 277V specification. This part is suitable only for circuits operating at or below 250V AC. The DC rating of 65V remains equivalent.

Q: Are all three parts RoHS3 compliant?

A: Yes. The SCHURTER 4420.0531, SCHURTER 4420.0595, and Phoenix Contact 0914073 are all ROHS3 compliant.

Q: What is the difference in product status between the substitutes?

A: The SCHURTER 4420.0595 is obsolete, matching the status of the original part. The Phoenix Contact 0914073 is active, indicating ongoing manufacturer support and availability.

Q: Does packaging affect substitution compatibility?

A: Packaging format (bulk or standard) does not affect electrical or mechanical compatibility. All three parts are suitable for DIN rail installation regardless of packaging configuration.

Q: Which substitute should be selected for new system designs?

A: For new designs requiring 277V AC operation, the SCHURTER 4420.0595 maintains full specification alignment. For systems limited to 250V AC or lower, the Phoenix Contact 0914073 provides an active product alternative with ongoing manufacturer support.