SCHURTER 4420.0139 Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The SCHURTER 4420.0139 is a thermal magnetic circuit breaker rated at 1.5A with 277V AC and 65V DC voltage ratings, designed for DIN rail mounting with lever actuation. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance and component replacement in existing installations.

Substiute Parts

4420.0139

SCHURTER Inc.In Stock: 7374420.0139 Datasheet

Current PartRFQ

4230-T120-K0BE-1.5A

E-T-AIn Stock: 12384230-T120-K0BE-1.5A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for thermal magnetic circuit breakers is determined by the following critical parameters:

• Current Rating (Amps): Must match exactly at 1.5A
• Breaker Type: Must be Thermal Magnetic
• Mounting Type: Must be DIN Rail
• Actuator Type: Must be Lever
• Number of Poles: Must be 2
• Voltage Rating - AC: Substitute must equal or exceed 277V AC
• Voltage Rating - DC: Substitute must equal or exceed 65V DC
• Approval Certifications: Must maintain compliance with applicable standards

The E-T-A 4230-T120-K0BE-1.5A meets all substitution criteria with enhanced voltage ratings (480V AC / 125V DC), providing superior performance margin while maintaining identical current and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The E-T-A 4230-T120-K0BE-1.5A is a direct functional substitute for the obsolete SCHURTER 4420.0139. Both components maintain ROHS3 compliance and share identical current ratings, mechanical mounting, and actuation characteristics. The substitute component features higher voltage ratings (480V AC and 125V DC versus 277V AC and 65V DC), which provides additional operational margin without affecting circuit protection performance at the specified 1.5A threshold.

The substitute maintains active production status, ensuring long-term availability and supply chain continuity. Certification compliance includes UL1077 and CSA C22.2 No 235, meeting the primary approval standards shared with the original component.

Frequently Asked Questions (FAQ)

Q: Can the E-T-A 4230-T120-K0BE-1.5A be used as a direct replacement for the SCHURTER 4420.0139?

A: Yes. Both components are 1.5A thermal magnetic circuit breakers with identical mounting (DIN rail), actuation (lever), and pole configuration (2-pole). The substitute's higher voltage ratings (480V AC / 125V DC) exceed the original's requirements (277V AC / 65V DC), making it functionally compatible for the same application.

Q: What is the significance of the voltage rating difference?

A: The substitute component is rated for higher voltages, which indicates it can safely operate in circuits with higher voltage potential. This does not affect the current protection threshold, which remains at 1.5A for both components. The higher rating provides additional safety margin in the electrical system.

Q: Are there any compliance or certification differences?

A: Both components are ROHS3 compliant and REACH unaffected. The substitute maintains UL1077 and CSA C22.2 No 235 certifications, which cover the primary approval standards for this product category.

Q: Why is the original component listed as obsolete?

A: The SCHURTER 4420.0139 has been discontinued by the manufacturer. The E-T-A 4230-T120-K0BE-1.5A remains in active production, ensuring availability for replacement applications.

Q: Are there any packaging or inventory considerations?

A: The substitute is supplied in bulk packaging. Verify packaging requirements for your specific application before procurement.