Weidmüller MCB 489 2P 50A ACDC Circuit Breaker (2479000000) – Equivalent & Substitute Parts

Part Overview

The Weidmüller MCB 489 2P D 50A ACDC (part number 2479000000) is a thermal magnetic circuit breaker designed for DIN rail mounting. This 2-pole breaker provides 50A protection at 240V AC and 125V DC with lever actuation. The product is active and widely stocked, with 804 units currently available. Circuit breakers of this specification are essential for electrical distribution systems requiring dual-voltage protection and reliable thermal-magnetic trip characteristics.

Substiute Parts

2479000000

WeidmüllerIn Stock: 8442479000000 Datasheet

Current PartRFQ

2478260000

WeidmüllerIn Stock: 8112478260000 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Weidmüller MCB 489 2P C 50A ACDC (part number 2478260000) qualifies as a parametric equivalent based on the following matching criteria:

Identical Parameters:

• Manufacturer: Weidmüller
• Series: MCB 489
• Mounting Type: DIN Rail
• Breaker Type: Thermal Magnetic
• Current Rating: 50A
• Voltage Rating – AC: 240V
• Voltage Rating – DC: 125V
• Number of Poles: 2
• Actuator Type: Lever
• Product Status: Active
• RoHS Compliance: Yes
• Regulatory Approvals: CE, CSA C22.2 No 5, CSA C22.2 No 235, TUV, UL489, VDE

Distinguishing Feature: The substitute part differs only in the trip characteristic curve designation: the main part uses curve "D" while the substitute uses curve "C". This represents the only technical distinction between the two models within the MCB 489 series.

Parameter Comparison

Engineering Selection Recommendations

Both the main part (2479000000) and substitute part (2478260000) are active products manufactured by Weidmüller within the MCB 489 series. Both carry identical regulatory approvals including CE, CSA C22.2 No 5, CSA C22.2 No 235, TUV, UL489, and VDE certification, confirming compliance with international electrical safety standards.

The primary technical distinction is the trip characteristic curve: curve D versus curve C. This parameter defines the thermal-magnetic response profile of the breaker under fault conditions. Selection between these two models depends on the specific trip curve requirement of the application circuit design.

Both parts are RoHS compliant and available in bulk packaging. Current inventory shows 804 units of the main part and 735 units of the substitute part in stock.

Frequently Asked Questions (FAQ)

Q: What is the difference between trip characteristic curves C and D in the MCB 489 series?

A: The trip characteristic curve defines the thermal-magnetic response profile. Curve C and curve D represent different trip thresholds and response times under overload and short-circuit conditions. Selection depends on the specific protection requirements of the circuit being protected.

Q: Are both parts electrically and mechanically compatible for DIN rail installation?

A: Both parts are identical in mounting type (DIN Rail), physical form factor, and mechanical interface. They are mechanically interchangeable on standard DIN rail systems.

Q: Do both parts carry the same regulatory certifications?

A: Yes. Both the main part (2479000000) and substitute part (2478260000) carry identical approvals: CE, CSA C22.2 No 5, CSA C22.2 No 235, TUV, UL489, and VDE.

Q: What is the current rating and voltage specification for both parts?

A: Both parts are rated for 50A at 240V AC and 125V DC, with 2-pole configuration and lever actuation.

Q: Are both parts RoHS compliant?

A: Yes. Both the main part and substitute part are RoHS compliant.

Q: What is the availability status of these parts?

A: Both parts are active products. The main part (2479000000) has 804 units in stock, and the substitute part (2478260000) has 735 units in stock.