2D03UM Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The 2D03UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 300mA at 480V AC and 80V DC. This DIN rail-mounted device features a lever actuator and dual-pole configuration, designed for industrial control and protection applications. The product is active and widely available with 661 units in current inventory. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product series, ensuring functional interchangeability in existing installations.

Substiute Parts

2D03UM

Altech CorporationIn Stock: 6982D03UM Datasheet

Current PartRFQ

2E03UM

Altech CorporationIn Stock: 8482E03UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 2E03UM is identified as a parametric equivalent to the 2D03UM based on the following matching electrical and mechanical specifications:

• Current Rating: 300mA (identical)
• Voltage Rating - AC: 480V (identical)
• Voltage Rating - DC: 80V (identical)
• Breaker Type: Thermal Magnetic (identical)
• Number of Poles: 2 (identical)
• Mounting Type: DIN Rail (identical)
• Actuator Type: Lever (identical)
• Series: V-EA (identical)
• RoHS Status: ROHS3 Compliant (identical)

Both parts share the same base electrical protection characteristics and physical form factor, making them functionally interchangeable within applications designed for either model.

Parameter Comparison

Engineering Selection Recommendations

Both the 2D03UM and 2E03UM are active products from Altech Corporation's V-EA series with identical electrical and mechanical specifications. Selection between these parts should be based on availability and supply chain requirements. The 2E03UM currently has higher inventory availability at 763 units compared to 661 units for the 2D03UM. Both parts maintain CSA and UL508 certifications; the 2D03UM additionally carries VDE approval. For applications requiring VDE compliance, the 2D03UM is the specified choice. For general thermal magnetic protection at 300mA, 480V AC, and 80V DC with DIN rail mounting, either part satisfies the electrical and mechanical requirements.

Frequently Asked Questions (FAQ)

Q: Can the 2E03UM replace the 2D03UM in existing installations?

A: Yes, the 2E03UM is a parametric equivalent with identical current rating, voltage ratings, pole configuration, mounting type, and actuator type. Both are thermal magnetic breakers in the V-EA series with matching electrical characteristics.

Q: What is the difference between the 2D03UM and 2E03UM?

A: The primary difference is approval agency certification. The 2D03UM carries CSA, UL508, and VDE approvals, while the 2E03UM carries CSA and UL508 approvals. All electrical and mechanical parameters are identical.

Q: Which part should I specify for new designs?

A: For applications requiring VDE compliance, specify the 2D03UM. For applications requiring only CSA and UL508 compliance, either part is acceptable. Consult your system certification requirements to determine the appropriate choice.

Q: Are these parts compatible with the same DIN rail mounting systems?

A: Yes. Both the 2D03UM and 2E03UM are DIN rail-mounted devices with identical form factors and mounting specifications.

Q: What is the current rating for these circuit breakers?

A: Both the 2D03UM and 2E03UM are rated for 300mA (0.3A) thermal magnetic protection.