Circuit Breaker Thermal Magnetic 4420.0686 - Equivalent & Substitute Parts

Part Overview

The SCHURTER 4420.0686 is a three-pole thermal magnetic circuit breaker rated for 50A 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 original stock is unavailable.

The substitution requirement arises from the product's discontinued status. Equivalent parts must maintain identical electrical performance characteristics and mechanical compatibility to ensure seamless integration into existing or new control systems.

Substiute Parts

4420.0686

SCHURTER Inc.In Stock: 10354420.0686 Datasheet

Current PartRFQ

3D50UM

Altech CorporationIn Stock: 12053D50UM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4420.0686 is determined by strict equivalence across the following critical parameters:

• Breaker Type: Thermal Magnetic operation must be maintained
• Current Rating: 50A requirement is non-negotiable
• Voltage Rating - AC: 480V minimum AC rating required
• Mounting Configuration: DIN rail mounting with lever actuation
• Pole Configuration: Three-pole design
• Regulatory Compliance: Certifications must cover industrial control applications (UL508, CSA standards)

The Altech Corporation 3D50UM meets these criteria as a direct functional equivalent. Both components share identical current and AC voltage ratings, thermal magnetic operation, three-pole configuration, lever actuation, and DIN rail mounting. Both maintain ROHS3 compliance and EAR99 export classification.

Parameter Comparison

Engineering Selection Recommendations

The Altech 3D50UM is the identified equivalent substitute for the obsolete SCHURTER 4420.0686 based on matching electrical and mechanical specifications. Both components are ROHS3 compliant and carry UL508 certification for industrial control applications.

The 3D50UM is currently in active production with 1190 units available in inventory, providing supply continuity for applications requiring 50A thermal magnetic circuit protection at 480V AC on DIN rail systems.

Selection of the 3D50UM is appropriate for direct replacement in existing installations and new designs where the original SCHURTER component is no longer obtainable.

Frequently Asked Questions (FAQ)

Q: Can the Altech 3D50UM directly replace the SCHURTER 4420.0686?

A: Yes. Both components share identical current rating (50A), AC voltage rating (480V), breaker type (thermal magnetic), mounting configuration (DIN rail), pole count (three), and actuation method (lever). Both maintain ROHS3 compliance and UL508 certification.

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

A: The SCHURTER 4420.0686 specifies 65V DC rating, while the Altech 3D50UM does not provide a DC voltage specification in available documentation. For applications requiring DC operation, the DC rating specification should be confirmed with the manufacturer before substitution.

Q: Are there packaging differences between these components?

A: The SCHURTER 4420.0686 is packaged as individual units, while the Altech 3D50UM is supplied in bulk packaging. Both are DIN rail mounted components with identical form factors.

Q: What certifications apply to both components?

A: Both the SCHURTER 4420.0686 and Altech 3D50UM carry UL508 certification and CSA approval, meeting North American industrial control standards. The SCHURTER component carries additional international certifications (EN 60934, IEC 60934, GB 17701).

Q: Is the 3D50UM suitable for new equipment designs?

A: Yes. The 3D50UM is in active production status with current inventory availability, making it suitable for both replacement applications and new system designs requiring 50A thermal magnetic circuit protection.