Circuit Breaker Thermal Magnetic 2A 277V 65V DIN Rail - SCHURTER 4420.023

Part Overview

The SCHURTER 4420.023 is a single-pole thermal magnetic circuit breaker rated for 2A 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 essential for system maintenance, repair, and new design implementations where legacy specifications must be maintained.

Substiute Parts

4420.023

SCHURTER Inc.In Stock: 12034420.023 Datasheet

Current PartRFQ

7940112055

WeidmüllerIn Stock: 8527940112055 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 4420.023 is determined by strict equivalence across the following critical parameters:

• Current Rating: 2A (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 7940112055 satisfies all substitution criteria, providing functional equivalence for applications requiring the specified electrical and mechanical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The Weidmüller 7940112055 is the qualified substitute for the obsolete SCHURTER 4420.023. Selection is based on:

• Electrical equivalence: Identical current and voltage ratings across AC and DC specifications
• Mechanical compatibility: Matching DIN rail mounting, lever actuation, and single-pole configuration
• Regulatory compliance: Both components meet UL1077 and CSA C22.2 No 235 standards; the Weidmüller part additionally carries VDE certification
• Product availability: The Weidmüller component maintains active production status, ensuring supply chain continuity

Frequently Asked Questions (FAQ)

Q: Can the Weidmüller 7940112055 directly replace the SCHURTER 4420.023 in existing installations?

A: Yes. Both components share identical electrical ratings (2A, 277V AC, 65V DC), breaker type (thermal magnetic), mounting configuration (DIN rail), and actuation method (lever). Physical form factor and electrical behavior are equivalent.

Q: What certifications apply to both parts?

A: Both the SCHURTER 4420.023 and Weidmüller 7940112055 comply with UL1077 and CSA C22.2 No 235. The Weidmüller part carries additional VDE certification. Both are RoHS compliant and REACH unaffected.

Q: Why is the SCHURTER part listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The Weidmüller 7940112055 provides functional continuity for applications requiring this specification.

Q: Are there any differences in approval agencies between the two parts?

A: The SCHURTER 4420.023 carries approvals under CSA C22.2 No 14, CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL1077, and UL508. The Weidmüller 7940112055 carries CSA C22.2 No 235, UL1077, and VDE. Both meet the core industrial standards for thermal magnetic circuit breakers.

Q: What is the packaging format for these components?

A: Both parts are supplied in bulk packaging, suitable for integration into control panels and industrial equipment assemblies.