Circuit Breaker Thermal Magnetic 1DU2L - Equivalent & Substitute Parts

Part Overview

The Altech Corporation 1DU2L is a single-pole thermal magnetic circuit breaker rated for 2A at 277V AC and 125V DC, designed for DIN rail mounting with lever actuation. This component is discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing system maintenance and component procurement. The 1DU2L remains available in inventory (1103 pcs) and maintains full compliance with CE, cULus, and UL489 standards, ensuring continued viability for applications requiring thermal magnetic protection in industrial and commercial electrical systems.

Substiute Parts

1DU2L

Altech CorporationIn Stock: 12071DU2L Datasheet

Current PartRFQ

1D2UL

Altech CorporationIn Stock: 11371D2UL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1DU2L is determined by strict equivalence across the following critical parameters:

• Current Rating: 2A (exact match required)
• Voltage Rating - AC: 277V (exact match required)
• Number of Poles: 1 (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Actuator Type: Lever (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Approval Agencies: CE, cULus, UL489 (minimum compliance required)

The 1D2UL substitute part meets all critical electrical and mechanical parameters. While the 1D2UL does not specify a DC voltage rating in the provided data, it maintains identical AC voltage rating, current rating, pole configuration, breaker type, actuation method, and mounting standard. Both parts carry equivalent regulatory approvals and RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The 1D2UL serves as a direct substitute for the discontinued 1DU2L based on electrical and mechanical parameter equivalence. Both parts are manufactured by Altech Corporation and maintain identical current ratings, AC voltage ratings, pole configuration, thermal magnetic protection type, lever actuation, and DIN rail mounting. Both parts carry CE, cULus, and UL489 certifications and comply with ROHS3 requirements.

The 1D2UL is currently in active production status with comparable inventory levels (1094 pcs), providing supply continuity for applications previously specified with the 1DU2L. The absence of a specified DC voltage rating for the 1D2UL in available documentation should be clarified with the manufacturer if DC operation at 125V is a critical requirement for your application.

Frequently Asked Questions (FAQ)

Q: Can the 1D2UL directly replace the 1DU2L in existing installations?

A: Yes. Both parts are single-pole thermal magnetic circuit breakers with identical 2A current ratings, 277V AC voltage ratings, lever actuation, and DIN rail mounting. Both carry equivalent regulatory approvals (CE, cULus, UL489) and RoHS3 compliance.

Q: What is the difference between the 1DU2L and 1D2UL?

A: The primary difference is product status: the 1DU2L is discontinued at DiGi Electronics, while the 1D2UL remains in active production. The 1DU2L specifies 125V DC rating; the 1D2UL does not provide a DC voltage specification in available data. Both parts are otherwise electrically and mechanically equivalent.

Q: Are there packaging differences between these parts?

A: The 1DU2L is packaged as individual units (packaging not specified), while the 1D2UL is supplied in bulk packaging. Both are suitable for DIN rail installation.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the 1DU2L and 1D2UL carry CE, cULus, and UL489 approvals and comply with ROHS3 requirements.

Q: If my application requires 125V DC operation, can I use the 1D2UL?

A: The 1D2UL does not specify a DC voltage rating in available technical documentation. Confirmation of DC voltage capability should be obtained from Altech Corporation before selection for DC applications.