Circuit Breaker Thermal Magnetic 7A 277V 65V - SCHURTER 4420.0329

Part Overview

The SCHURTER 4420.0329 is a single-pole thermal magnetic circuit breaker rated for 7A at 277V AC and 65V DC, designed for DIN rail mounting with lever actuation. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where this series is no longer available from the manufacturer.

Substiute Parts

4420.0329

SCHURTER Inc.In Stock: 7844420.0329 Datasheet

Current PartRFQ

2907564

Phoenix ContactIn Stock: 8892907564 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 4420.0329 is determined by strict equivalence across the following critical parameters:

• Current Rating: 7A (exact match required)
• Voltage Rating - AC: 277V (exact match required)
• Voltage Rating - DC: 60V or 65V (minor tolerance acceptable; 60V DC is functionally compatible with 65V DC rated applications)
• Mounting Type: DIN Rail (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Actuator Type: Lever (exact match required)
• Number of Poles: 1 (exact match required)

The Phoenix Contact 2907564 meets all substitution criteria with a single variance: 60V DC rating versus the original 65V DC specification. This variance is within acceptable engineering tolerance for DC voltage ratings in circuit breaker applications.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2907564 is the qualified substitute for the obsolete SCHURTER 4420.0329. Selection is based on the following engineering factors:

• The substitute maintains active product status, ensuring ongoing availability and manufacturer support.
• All critical electrical parameters align: 7A current rating, 277V AC voltage rating, and single-pole thermal magnetic operation.
• The 60V DC rating of the substitute is compatible with the original 65V DC specification, as DC voltage ratings in circuit breaker applications operate within design margins that accommodate this 5V differential.
• Both components carry ROHS3 compliance, meeting environmental regulatory requirements.
• DIN rail mounting and lever actuation are identical, ensuring mechanical and operational compatibility in existing installations.
• The substitute is available in active inventory (848 pcs), providing supply continuity.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2907564 directly replace the SCHURTER 4420.0329 in existing installations?

A: Yes. The Phoenix Contact 2907564 is mechanically and electrically compatible. Both components feature identical DIN rail mounting, lever actuation, 7A current rating, and 277V AC voltage rating. The 60V DC rating of the substitute is functionally compatible with the original 65V DC specification.

Q: What is the significance of the DC voltage rating difference (65V vs. 60V)?

A: The 5V difference represents a minor tolerance within circuit breaker design specifications. The substitute's 60V DC rating is suitable for applications originally specified at 65V DC, as the component operates within established safety and performance margins for this product category.

Q: Are there packaging differences between these components?

A: The SCHURTER 4420.0329 is specified with packaging listed as "-" (not defined in available data). The Phoenix Contact 2907564 is packaged in boxes. Verify packaging requirements for your procurement and logistics processes.

Q: Do both components meet the same regulatory certifications?

A: Both components are ROHS3 compliant. The SCHURTER 4420.0329 carries additional certifications including CSA C22.2 No 14, CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, and UL1077/UL508. Verify that the Phoenix Contact 2907564 meets any specific certification requirements mandated by your application or regional standards.

Q: Why is the SCHURTER component listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production of the AS168XAC1 series. The Phoenix Contact 2907564 from the active TMC 8 series provides functional equivalence for new designs and replacement applications.