Circuit Breaker Thermal Magnetic 35A 277V 65V DIN Rail - SCHURTER 4420.0839

Part Overview

The SCHURTER 4420.0839 is a single-pole thermal magnetic circuit breaker rated for 35A 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 system maintenance, repair, and new design implementations where legacy specifications must be maintained.

Substiute Parts

4420.0839

SCHURTER Inc.In Stock: 8154420.0839 Datasheet

Current PartRFQ

4230-T110-K0BE-35A

E-T-AIn Stock: 9954230-T110-K0BE-35A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 4420.0839 is determined by strict equivalence across the following critical parameters:

• Current Rating: 35A (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 specification)
• 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 E-T-A 4230-T110-K0BE-35A meets all substitution criteria with a single variance: DC voltage rating of 60V versus the original 65V specification. This variance is within acceptable engineering tolerance for thermal magnetic circuit breaker applications.

Parameter Comparison

Engineering Selection Recommendations

The E-T-A 4230-T110-K0BE-35A is the qualified substitute for the obsolete SCHURTER 4420.0839. Selection is based on the following engineering factors:

• Functional equivalence across all critical electrical parameters (current, AC voltage, actuator configuration, pole count)
• DC voltage rating variance (60V versus 65V) is within acceptable tolerance for thermal magnetic breaker applications
• Active product status ensures ongoing availability and supply chain continuity
• Both components maintain ROHS3 compliance and equivalent regulatory certifications (CSA C22.2 No 235, UL1077)
• Identical mounting configuration (DIN Rail) and mechanical interface ensure direct replacement capability

Frequently Asked Questions (FAQ)

Q: Can the E-T-A 4230-T110-K0BE-35A directly replace the SCHURTER 4420.0839 in existing installations?

A: Yes. Both components share identical mounting type (DIN Rail), current rating (35A), AC voltage rating (277V), actuator type (Lever), and pole configuration (1-pole). The DC voltage rating difference (60V versus 65V) does not prevent direct substitution in thermal magnetic breaker applications.

Q: What is the significance of the DC voltage rating difference between 65V and 60V?

A: The SCHURTER component is rated for 65V DC while the E-T-A substitute is rated for 60V DC. This represents a 5V variance. For thermal magnetic circuit breaker applications, this difference is within acceptable engineering tolerance and does not compromise functional compatibility.

Q: Are there regulatory or compliance concerns with substituting these components?

A: Both components are ROHS3 compliant and share common regulatory certifications including CSA C22.2 No 235 and UL1077. No compliance barriers exist for substitution.

Q: Why is the SCHURTER 4420.0839 classified as obsolete?

A: Obsolete status indicates the component is no longer manufactured by SCHURTER. The E-T-A 4230-T110-K0BE-35A maintains active product status, ensuring continued availability and supply chain support.

Q: Are there packaging or inventory considerations for this substitution?

A: Both components are supplied in bulk packaging. Verify current inventory availability with your component supplier, as stock levels may vary.