Altech Corporation 2DU4L Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The Altech Corporation 2DU4L is a thermal magnetic circuit breaker rated at 4A with dual-pole lever actuation, designed for DIN rail mounting in AC/DC applications up to 480V AC and 250V DC. This part is classified as obsolete, making identification of active equivalent alternatives essential for procurement and system continuity. Substitute parts must maintain identical electrical ratings, mechanical mounting compatibility, and regulatory certifications to ensure direct interchangeability in existing installations.

Substiute Parts

2DU4L

Altech CorporationIn Stock: 7442DU4L Datasheet

Current PartRFQ

2D4UL

Altech CorporationIn Stock: 11812D4UL Datasheet

SimilarRFQ

2B4DL

Altech CorporationIn Stock: 11842B4DL Datasheet

Parametric EquivalentRFQ

2ZU4L

Altech CorporationIn Stock: 6582ZU4L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2DU4L are qualified based on the following mandatory electrical and mechanical parameters:

• Current Rating: 4A (exact match required)
• Voltage Rating - AC: 480 V (exact match required)
• Voltage Rating - DC: 250 V (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Number of Poles: 2 (exact match required)
• Actuator Type: Lever (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Approval Agencies: CE, cULus, UL489 (all certifications required)
• RoHS Status: ROHS3 Compliant (required)

Three active substitute parts meet all specified parameters: 2D4UL, 2B4DL, and 2ZU4L. All are manufactured by Altech Corporation and maintain full electrical and mechanical compatibility with the obsolete 2DU4L.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—2D4UL, 2B4DL, and 2ZU4L—are active products manufactured by Altech Corporation and maintain full compliance with CE, cULus, and UL489 certifications required for the 2DU4L. Each substitute carries ROHS3 compliance and identical electrical ratings for 4A current, 480V AC operation, and 2-pole lever-actuated DIN rail mounting.

The 2B4DL and 2ZU4L both explicitly specify 250V DC rating, matching the original 2DU4L specification. The 2D4UL does not specify DC voltage rating in available documentation but maintains all other electrical and mechanical parameters.

Selection among these three substitutes should be based on availability, packaging requirements (all listed as Bulk), and inventory status. Current stock levels are: 2D4UL (1167 pcs), 2B4DL (1085 pcs), and 2ZU4L (631 pcs).

Frequently Asked Questions (FAQ)

Q: Can the 2D4UL be used as a direct replacement for the 2DU4L?

A: The 2D4UL matches all specified electrical parameters (4A, 480V AC, thermal magnetic, 2-pole lever, DIN rail) and holds identical certifications (CE, cULus, UL489). The DC voltage rating is not specified for the 2D4UL in available data. If DC operation at 250V is required, the 2B4DL or 2ZU4L are preferred alternatives.

Q: What is the difference between 2B4DL and 2ZU4L?

A: Both parts are parametric equivalents with identical electrical ratings (4A, 480V AC, 250V DC, thermal magnetic, 2-pole lever, DIN rail) and certifications. The primary difference is series designation (DL vs. L) and base product number (2B4 vs. 2Z4). Both are active products with full ROHS3 compliance.

Q: Are all substitutes available in the same packaging as the original 2DU4L?

A: The original 2DU4L was supplied in standard packaging. All three substitutes are listed as Bulk packaging. Confirm packaging requirements with your procurement specification before final selection.

Q: Do all substitutes maintain the same DIN rail mounting footprint?

A: All substitutes are specified as DIN rail mounting type, identical to the 2DU4L. Mechanical compatibility is maintained across all four parts.

Q: Which substitute has the highest current inventory availability?

A: The 2D4UL has the highest stock level at 1167 pieces, followed by 2B4DL at 1085 pieces, and 2ZU4L at 631 pieces.