Circuit Breaker Thermal Magnetic 5A 277V 65V DC - SCHURTER 4420.0202

Part Overview

The SCHURTER 4420.0202 is a single-pole thermal magnetic circuit breaker rated for 5A 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. The part carries multiple international approvals including UL1077, CSA, EN, GB, and IEC standards, ensuring compliance across diverse regulatory jurisdictions.

Substiute Parts

4420.0202

SCHURTER Inc.In Stock: 10454420.0202 Datasheet

Current PartRFQ

7940112057

WeidmüllerIn Stock: 9747940112057 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCHURTER 4420.0202 is determined by the following critical parameters:

• Mounting Type: DIN Rail (mechanical compatibility)
• Breaker Type: Thermal Magnetic (functional operation principle)
• Number of Poles: 1 (circuit configuration)
• Voltage Rating - AC: 277V (primary operating voltage)
• Voltage Rating - DC: 65V (secondary operating voltage)
• Actuator Type: Lever (user interface consistency)

The Weidmüller 7940112057 qualifies as a substitute based on matching all critical parameters. The current rating difference (6A vs. 5A) represents an uprating that maintains compatibility within the same voltage and mechanical framework, provided system design accommodates the higher current capacity.

Parameter Comparison

Engineering Selection Recommendations

The Weidmüller 7940112057 (CB2200 series) is an active product with current manufacturing support, providing supply chain continuity for applications currently using the obsolete SCHURTER 4420.0202. Both components meet overlapping regulatory certifications including UL1077 and CSA C22.2 No. 235, ensuring compliance maintenance across standard jurisdictions.

The 6A current rating of the Weidmüller substitute exceeds the original 5A specification. System designers must verify that the higher current capacity does not conflict with downstream circuit protection requirements or load characteristics. The identical voltage ratings (277V AC / 65V DC) and mechanical form factor (DIN rail, single-pole, lever actuation) ensure direct physical and electrical compatibility within the same installation framework.

Frequently Asked Questions (FAQ)

Q: Can the Weidmüller 7940112057 directly replace the SCHURTER 4420.0202 in existing installations?

A: Physical and electrical compatibility is confirmed across all critical parameters: DIN rail mounting, thermal magnetic operation, single-pole configuration, 277V AC / 65V DC voltage ratings, and lever actuation. The higher 6A current rating requires verification that system design accommodates this uprating without compromising circuit protection strategy.

Q: What is the significance of the current rating difference (5A vs. 6A)?

A: The Weidmüller substitute provides a 1A higher current capacity. This represents an uprating that maintains compatibility with the voltage and mechanical specifications. Applications must confirm that the higher trip threshold aligns with load protection requirements and does not create unintended protection gaps.

Q: Are regulatory certifications equivalent between the two parts?

A: Both components carry UL1077 and CSA C22.2 No. 235 certifications. The SCHURTER part includes additional certifications (EN 60934, GB 17701, IEC 60934), while the Weidmüller part includes VDE certification. Verify that your specific regulatory jurisdiction requirements are met by the substitute part's certification profile.

Q: What is the packaging difference between these parts?

A: The SCHURTER 4420.0202 is supplied with unspecified packaging, while the Weidmüller 7940112057 is supplied in bulk packaging. Confirm that bulk packaging meets your procurement and handling requirements.

Q: Why is the SCHURTER part listed as obsolete?

A: Obsolete status indicates that the manufacturer has discontinued production. The Weidmüller 7940112057 is an active product with ongoing manufacturing support, making it suitable for new designs and long-term supply chain planning.