Circuit Breaker Thermal Magnetic 3A 360 VDC - SCHURTER 4420.052

Part Overview

The SCHURTER 4420.052 is a thermal magnetic circuit breaker rated for 3A at 360 VDC, designed for DIN rail mounting with lever actuation and 2-pole configuration. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system maintenance and new installations where this model is no longer available through standard distribution channels.

Substiute Parts

4420.052

SCHURTER Inc.In Stock: 9744420.052 Datasheet

Current PartRFQ

2D4UL

Altech CorporationIn Stock: 11812D4UL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 4420.052 is determined by the following critical parameters:

• Mounting Type: DIN Rail compatibility is mandatory
• Breaker Type: Thermal Magnetic operation must be maintained
• Actuator Type: Lever actuation required
• Number of Poles: 2-pole configuration
• Voltage Rating: DC voltage capability at or above 360 V
• Current Rating: Amperage rating must meet or exceed 3A
• Approval Certifications: Compliance with relevant safety standards (UL, CSA, IEC, EN, GB)

The Altech Corporation 2D4UL satisfies these substitution criteria through equivalent mechanical configuration and functional characteristics, though with differing current and voltage specifications within acceptable operating parameters.

Parameter Comparison

Engineering Selection Recommendations

The Altech 2D4UL is an active product with current manufacturing support and distribution availability, addressing the obsolescence status of the SCHURTER 4420.052. Both components share identical mechanical mounting, breaker topology, actuation method, and pole configuration. The 2D4UL carries UL489 certification, which supersedes UL1077 for circuit breaker applications, and maintains cULus dual certification for North American compliance. Both parts are ROHS3 compliant and carry equivalent environmental classification.

The 4A current rating of the 2D4UL exceeds the 3A requirement of the original part, providing operational margin. Voltage rating specifications differ between the two parts; the original specifies 360 VDC while the substitute specifies 480 VAC. Application-specific voltage compatibility must be confirmed based on actual system requirements.

Frequently Asked Questions (FAQ)

Q: Can the Altech 2D4UL directly replace the SCHURTER 4420.052 in all applications?

A: Both parts share identical DIN rail mounting, thermal magnetic operation, lever actuation, and 2-pole configuration. The 2D4UL has a higher current rating (4A vs. 3A) and different voltage specifications. Compatibility depends on the specific voltage and current requirements of your application.

Q: What is the significance of the current rating difference between 3A and 4A?

A: The 2D4UL's 4A rating exceeds the original 3A specification. In applications where the circuit is designed for 3A protection, the higher rating of the substitute must be evaluated against system protection requirements.

Q: Are the approval certifications equivalent between these two parts?

A: Both parts carry UL certification. The 2D4UL holds UL489 certification, which is the current standard for circuit breakers. The original part references UL1077 and UL508. Certification equivalence depends on your specific regulatory requirements and application context.

Q: What packaging is available for the Altech 2D4UL?

A: The Altech 2D4UL is available in bulk packaging, differing from the original part's packaging specification.

Q: Are both parts RoHS compliant?

A: Yes, both the SCHURTER 4420.052 and Altech 2D4UL are ROHS3 compliant and REACH unaffected.