Circuit Breaker Thermal Magnetic 3A 277V 65V DIN Rail - SCHURTER 4420.0229

Part Overview

The SCHURTER 4420.0229 is a single-pole thermal magnetic circuit breaker rated for 3A 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 new designs and ongoing system maintenance. The breaker provides overcurrent and short-circuit protection in industrial control and distribution applications requiring dual voltage operation.

Substiute Parts

4420.0229

SCHURTER Inc.In Stock: 8024420.0229 Datasheet

Current PartRFQ

7940112056

WeidmüllerIn Stock: 10707940112056 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCHURTER 4420.0229 is determined by strict equivalence across the following critical parameters:

• Current Rating: 3A (exact match required)
• Voltage Rating - AC: 277V (exact match required)
• Voltage Rating - DC: 65V (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Actuator Type: Lever (exact match required)
• Number of Poles: 1 (exact match required)

The Weidmüller 7940112056 meets all substitution criteria, providing functional and electrical equivalence for applications currently using the obsolete SCHURTER component.

Parameter Comparison

Engineering Selection Recommendations

The Weidmüller 7940112056 is the direct equivalent substitute for the obsolete SCHURTER 4420.0229. Both components share identical electrical ratings, mechanical configuration, and functional characteristics. The Weidmüller part carries active product status with current manufacturing support, ensuring availability for replacement and new installations.

Compliance certifications differ between the two manufacturers. The SCHURTER part holds CSA C22.2 No 14, CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL1077, and UL508 approvals. The Weidmüller substitute carries CSA C22.2 No 235, UL1077, and VDE certifications. Both parts satisfy UL1077 and CSA C22.2 No 235 requirements, which are primary standards for DIN rail circuit breakers in North American and international applications.

Frequently Asked Questions (FAQ)

Q: Can the Weidmüller 7940112056 directly replace the SCHURTER 4420.0229 in existing installations?

A: Yes. Both components are single-pole thermal magnetic circuit breakers with identical current ratings (3A), AC voltage rating (277V), DC voltage rating (65V), lever actuation, and DIN rail mounting. Electrical and mechanical compatibility is complete.

Q: What is the primary reason for substitution?

A: The SCHURTER 4420.0229 is classified as obsolete. The Weidmüller 7940112056 is an active product with current manufacturing and supply chain support.

Q: Are there differences in certification standards between these parts?

A: Both parts meet UL1077 and CSA C22.2 No 235 standards. The SCHURTER part includes additional certifications (CSA C22.2 No 14, EN 60934, GB 17701, IEC 60934, UL508), while the Weidmüller part includes VDE certification. For most North American industrial applications, the overlapping certifications are sufficient.

Q: What is the packaging difference?

A: The SCHURTER part is supplied with unspecified packaging. The Weidmüller substitute is supplied in bulk packaging. This does not affect electrical or mechanical performance.

Q: Are both parts RoHS and REACH compliant?

A: Yes. The SCHURTER part is RoHS3 compliant and REACH unaffected. The Weidmüller part is RoHS compliant and REACH unaffected. Both meet environmental regulatory requirements.