Circuit Breaker Thermal Magnetic 4420.0208 - Equivalent & Substitute Parts

Part Overview

The SCHURTER 4420.0208 is a single-pole thermal magnetic circuit breaker rated for 32A at 180 V DC with lever actuation and DIN rail mounting. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for system maintenance, repair, and new design implementations where this specific model is no longer available through standard distribution channels.

Substiute Parts

4420.0208

SCHURTER Inc.In Stock: 9044420.0208 Datasheet

Current PartRFQ

2907644

Phoenix ContactIn Stock: 11422907644 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Breaker Type: Must be thermal magnetic to maintain identical protection characteristics
• Mounting Type: Must be DIN rail to ensure mechanical compatibility with existing installations
• Actuator Type: Must be lever-operated for consistent user interface
• Number of Poles: Must be single-pole (1P) to match circuit configuration
• Current Rating: Must be equal to or greater than 32A to provide equivalent or enhanced protection capacity
• Voltage Rating - DC: Must be equal to or greater than 180 V DC to ensure safe operation in the specified voltage environment
• Regulatory Compliance: Must maintain equivalent or superior certification standards

The Phoenix Contact 2907644 qualifies as a substitute based on these criteria, with the following considerations: it provides a higher current rating (35A) and dual voltage capability (240 V AC / 125 V DC), while maintaining the same mechanical form factor and protection topology.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2907644 is an active product with current manufacturing support and distribution availability, addressing the obsolescence status of the SCHURTER 4420.0208. Both components maintain ROHS3 compliance and equivalent regulatory certifications under international standards (IEC 60934, UL1077, UL508).

The Phoenix Contact substitute provides a higher current rating (35A versus 32A), which offers enhanced protection margin in applications where the original 32A specification is maintained. The DC voltage rating of the substitute (125 V) is lower than the original (180 V), requiring verification that the application environment does not exceed 125 V DC operation. The addition of AC voltage capability (240 V) in the substitute provides operational flexibility for mixed AC/DC systems.

Mechanical and electrical interface compatibility is maintained through identical DIN rail mounting, lever actuation, and single-pole configuration. Selection of this substitute is appropriate for direct replacement in DC-only applications operating at or below 125 V DC with current requirements at or below 35A.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2907644 directly replace the SCHURTER 4420.0208 in all applications?

A: Direct replacement is suitable for applications operating at 125 V DC or lower. If the original application requires operation above 125 V DC, the substitute is not appropriate due to its lower DC voltage rating.

Q: Why is the current rating higher on the substitute part?

A: The Phoenix Contact 2907644 is rated for 35A compared to the original 32A. This higher rating does not prevent its use in 32A circuits; the breaker will provide equivalent or enhanced protection at the lower current level.

Q: Are the mechanical dimensions identical between these two breakers?

A: Both components use DIN rail mounting with lever actuation and single-pole configuration, ensuring mechanical compatibility in standard DIN rail enclosures.

Q: What certifications apply to the substitute part?

A: The Phoenix Contact 2907644 maintains ROHS3 compliance and is certified to international standards equivalent to the original component, including IEC 60934 and UL standards.

Q: Is the packaging format relevant to substitution?

A: The substitute is supplied in box packaging. Packaging format does not affect electrical or mechanical compatibility; it is relevant only for inventory and logistics considerations.