Circuit Breaker Thermal Magnetic 35A 480V 65V DIN Rail - SCHURTER 4420.0243

Part Overview

The SCHURTER 4420.0243 is a three-pole thermal magnetic circuit breaker rated for 35A at 480V 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 installations where legacy specifications must be maintained.

Substiute Parts

4420.0243

SCHURTER Inc.In Stock: 9074420.0243 Datasheet

Current PartRFQ

4230-T130-K0CU-35A

E-T-AIn Stock: 9034230-T130-K0CU-35A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 4420.0243 is determined by the following critical parameters:

• Current Rating: 35A (exact match required)
• Voltage Rating - AC: 480V (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Number of Poles: 3 (exact match required)
• Actuator Type: Lever (exact match required)

The E-T-A 4230-T130-K0CU-35A satisfies all critical substitution parameters. The variance in DC voltage rating (125V DC versus 65V DC) represents an upgrade in capability and does not restrict substitution in applications requiring the lower 65V DC specification.

Parameter Comparison

Engineering Selection Recommendations

The E-T-A 4230-T130-K0CU-35A is a direct functional substitute for the obsolete SCHURTER 4420.0243. Both components meet identical current, AC voltage, mounting, and pole configuration requirements. The substitute part carries active product status, ensuring continued availability and supply chain reliability.

The E-T-A component holds UL489 and CSA C22.2 No 235 certifications, providing regulatory compliance for North American applications. The SCHURTER original includes additional certifications (EN 60934, GB 17701, IEC 60934, UL1077, UL508); however, the E-T-A substitute satisfies the core safety standards required for circuit breaker operation in industrial control environments.

The higher DC voltage rating of the E-T-A substitute (125V DC versus 65V DC) provides enhanced capability without introducing compatibility issues in applications designed for the original 65V DC specification.

Frequently Asked Questions (FAQ)

Q: Can the E-T-A 4230-T130-K0CU-35A directly replace the SCHURTER 4420.0243 in existing installations?

A: Yes. Both components share identical current rating (35A), AC voltage rating (480V), mounting type (DIN Rail), pole configuration (3-pole), and actuator type (Lever). The substitute part is mechanically and electrically compatible for direct replacement.

Q: What is the significance of the different DC voltage ratings?

A: The SCHURTER original is rated for 65V DC, while the E-T-A substitute is rated for 125V DC. The higher rating on the substitute represents increased capability and does not restrict its use in applications requiring 65V DC operation. The component will function correctly at or below its rated voltage.

Q: Are there regulatory compliance differences between the two parts?

A: Both components are ROHS3 compliant and REACH unaffected. The SCHURTER original holds a broader set of international certifications (EN 60934, GB 17701, IEC 60934, UL1077, UL508), while the E-T-A substitute holds UL489 and CSA C22.2 No 235 certifications. For North American industrial control applications, the E-T-A certifications are sufficient.

Q: Why is the SCHURTER part listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The E-T-A 4230-T130-K0CU-35A maintains active product status, ensuring long-term availability and supply chain continuity.

Q: Are there packaging differences between the original and substitute?

A: The SCHURTER 4420.0243 is packaged as individual units, while the E-T-A 4230-T130-K0CU-35A is supplied in bulk packaging. Both are suitable for DIN rail installation and do not require special handling or preparation for deployment.