Circuit Breaker Thermal Magnetic 27A 180 VDC - 4420.0718

Part Overview

The SCHURTER 4420.0718 is a single-pole thermal magnetic circuit breaker rated for 27A at 180 VDC with lever actuation and DIN rail mounting. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing system maintenance. The breaker provides overcurrent and short-circuit protection in DC applications requiring thermal-magnetic trip characteristics.

Substiute Parts

4420.0718

SCHURTER Inc.In Stock: 10294420.0718 Datasheet

Current PartRFQ

1D30UL

Altech CorporationIn Stock: 11641D30UL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Altech Corporation 1D30UL serves as an equivalent substitute based on the following critical parameters:

• Mounting Type: Both components use DIN rail mounting, ensuring mechanical compatibility in existing enclosures
• Breaker Type: Both employ thermal magnetic trip mechanisms for combined overcurrent and short-circuit protection
• Actuator Type: Both feature lever actuation for manual operation and reset
• Number of Poles: Both are single-pole configurations
• RoHS Compliance: Both meet ROHS3 requirements
• Regulatory Approvals: Both hold relevant international safety certifications (UL, CSA, EN, IEC standards)

The 1D30UL operates at 30A (versus 27A) and 277 VAC/DC (versus 180 VDC). These parameter differences require application-level verification to ensure the substitute meets system protection requirements.

Parameter Comparison

Engineering Selection Recommendations

The Altech 1D30UL is an active product with current manufacturing support and regulatory certifications (UL489, cULus, CE). The SCHURTER 4420.0718 is obsolete and no longer manufactured. Selection of the 1D30UL as a substitute requires confirmation that the 30A current rating and 277 VAC/DC voltage rating are compatible with the protected circuit's design parameters. Both components share identical mechanical form factors (DIN rail mounting, single-pole lever actuation) and thermal-magnetic protection principles, supporting direct mechanical replacement in standard DIN rail enclosures.

Frequently Asked Questions (FAQ)

Q: Can the Altech 1D30UL directly replace the SCHURTER 4420.0718 in existing installations?

A: Mechanical compatibility is confirmed through identical DIN rail mounting and lever actuation. Electrical compatibility requires verification that the circuit design operates within the 1D30UL's 30A and 277 VAC/DC ratings.

Q: What are the key differences between these two breakers?

A: The primary differences are current rating (27A versus 30A) and voltage rating (180 VDC versus 277 VAC/DC). Both employ thermal-magnetic protection and single-pole lever actuation on DIN rail mounts.

Q: Are both breakers RoHS compliant?

A: Yes, both the SCHURTER 4420.0718 and Altech 1D30UL meet ROHS3 compliance requirements.

Q: What certifications apply to the substitute part?

A: The Altech 1D30UL holds CE, cULus, and UL489 certifications. The original SCHURTER part holds CSA, EN, GB, IEC, UL, and other international approvals.

Q: Why is the original SCHURTER part obsolete?

A: The SCHURTER 4420.0718 is classified as obsolete by the manufacturer, indicating it is no longer in active production. The Altech 1D30UL remains an active product with ongoing manufacturing and support.