Circuit Breaker Thermal Magnetic 3DU2L Equivalent & Substitute Parts

Part Overview

The Altech Corporation 3DU2L is a thermal magnetic circuit breaker rated for 2A at 480V AC/DC with lever actuation and DIN rail mounting. This component is classified as obsolete, making identification of equivalent substitute parts essential for system maintenance, repair, and component sourcing. The 3-pole configuration with thermal magnetic protection provides overcurrent and short-circuit protection in industrial control applications. Substitute parts must maintain identical electrical ratings, mechanical mounting compatibility, and regulatory approvals to ensure direct interchangeability without system redesign.

Substiute Parts

3DU2L

Altech CorporationIn Stock: 11433DU2L Datasheet

Current PartRFQ

3D2UL

Altech CorporationIn Stock: 8353D2UL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3DU2L is determined by strict equivalence across the following critical parameters:

• Current Rating: 2A (exact match required)
• Voltage Rating: 480V AC/DC (exact match required)
• Number of Poles: 3-pole configuration (exact match required)
• Breaker Type: Thermal Magnetic protection mechanism (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Actuator Type: Lever operation (exact match required)
• Regulatory Approvals: CE, cULus, UL489 certifications (all required)

The substitute part 3D2UL meets all these criteria, differing only in series designation (UL vs. L) and product status (Active vs. Obsolete). Series designation reflects manufacturing lineage but does not affect electrical or mechanical performance. The transition from obsolete to active status indicates the 3D2UL represents the current production equivalent.

Parameter Comparison

Engineering Selection Recommendations

The 3D2UL is the direct equivalent substitute for the obsolete 3DU2L. Both parts carry identical electrical ratings (2A, 480V AC/DC), mechanical configuration (3-pole, DIN rail, lever actuation), and regulatory certifications (CE, cULus, UL489). The 3D2UL maintains ROHS3 compliance and is currently in active production status, ensuring long-term availability and supply chain continuity. No electrical or mechanical modifications are required for direct replacement in existing installations.

Frequently Asked Questions (FAQ)

Q: Can the 3D2UL be used as a direct replacement for the 3DU2L?

A: Yes. Both parts are identical in electrical rating (2A, 480V), pole configuration (3-pole), mounting method (DIN rail), and actuator type (lever). All regulatory approvals match. Direct substitution is possible without system modification.

Q: What is the difference between the 3DU2L and 3D2UL?

A: The primary difference is product status: 3DU2L is obsolete while 3D2UL is active production. The series designation (L vs. UL) reflects manufacturing lineage. Electrical and mechanical specifications are identical.

Q: Are there any compatibility concerns when replacing 3DU2L with 3D2UL?

A: No compatibility concerns exist. Both parts share identical DIN rail mounting, lever actuation, and electrical characteristics. Physical dimensions and terminal configurations are equivalent.

Q: Does the 3D2UL meet the same regulatory requirements as the 3DU2L?

A: Yes. Both parts carry CE, cULus, and UL489 approvals. Both are ROHS3 compliant. Regulatory compliance is identical.

Q: What is the current availability status of these parts?

A: The 3DU2L is obsolete with limited remaining inventory (1091 pcs). The 3D2UL is in active production with current stock availability (806 pcs), making it the recommended choice for new procurement and replacement applications.