2Z4UM 4A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 2Z4UM is an active thermal magnetic circuit breaker manufactured by Altech Corporation, designed for DIN rail mounting applications. This 4A, 2-pole breaker operates at 480 V AC and 80 V DC with lever actuation and Z-characteristic trip curve. The part is ROHS3 compliant and holds CSA and UL508 approvals. Substitute parts are necessary when the primary part is unavailable, when specific trip characteristics are required for application tuning, or when alternative approval certifications are needed for regional compliance.

Key Parameters

Parameter	Value
Manufacturer	Altech Corporation
Series	V-EA
Mounting Type	DIN Rail
Breaker Type	Thermal Magnetic
Current Rating	4A
Voltage Rating - AC	480 V
Voltage Rating - DC	80 V
Number of Poles	2
Actuator Type	Lever
Approval Agencies	CSA, UL508
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

All substitute parts for the 2Z4UM maintain identical electrical and mechanical parameters: 4A current rating, 480 V AC / 80 V DC voltage ratings, 2-pole configuration, lever actuation, DIN rail mounting, and thermal magnetic operation. The substitutes differ only in trip characteristic designation (Z, C, D, E, G) and approval agency certifications. Trip characteristics define the magnetic trip threshold and thermal response curve, allowing selection based on application-specific overcurrent sensitivity requirements. The 2C4UM and 2D4UM include VDE certification in addition to CSA and UL508, providing expanded regional compliance options.

Parameter Comparison

Part Number	Manufacturer	Trip Characteristic	Current Rating	Voltage AC	Voltage DC	Poles	Mounting	Approvals	Inventory (Pcs)
2Z4UM	Altech Corporation	Z	4A	480 V	80 V	2	DIN Rail	CSA, UL508	951
2C4UM	Altech Corporation	C	4A	480 V	80 V	2	DIN Rail	CSA, UL508, VDE	1080
2D4UM	Altech Corporation	D	4A	480 V	80 V	2	DIN Rail	CSA, UL508, VDE	1169
2E4UM	Altech Corporation	E	4A	480 V	80 V	2	DIN Rail	CSA, UL508	1066
2G4UM	Altech Corporation	G	4A	480 V	80 V	2	DIN Rail	CSA, UL508	969

Engineering Selection Recommendations

All five parts maintain active product status and ROHS3 compliance. Selection between 2Z4UM and its substitutes depends on trip characteristic requirements and regional certification needs. The 2C4UM and 2D4UM provide VDE certification for European market compliance. The 2D4UM offers the highest current inventory at 1169 pieces. For applications requiring CSA and UL508 certification only, 2Z4UM, 2E4UM, and 2G4UM are suitable. All parts are packaged in bulk and share identical mechanical footprints for DIN rail installation.

Frequently Asked Questions (FAQ)

Q: Can 2C4UM replace 2Z4UM in my application? A: Yes, if trip characteristic differences are acceptable. Both parts share identical electrical ratings (4A, 480 V AC, 80 V DC), pole count, mounting type, and core approvals. The C-characteristic provides different magnetic and thermal response compared to Z-characteristic.

Q: What is the difference between trip characteristics Z, C, D, E, and G? A: Trip characteristics define the magnetic threshold and thermal response curve of the breaker. Each characteristic is optimized for different load types and overcurrent sensitivity requirements. Selection depends on your specific circuit protection needs.

Q: Do all substitutes have the same physical dimensions? A: Yes. All parts mount on DIN rail with identical mechanical interfaces and lever actuation, ensuring direct physical compatibility.

Q: Which substitute has the best availability? A: The 2D4UM has the highest inventory at 1169 pieces in stock.

Q: Are 2C4UM and 2D4UM suitable for European installations? A: Yes. Both include VDE certification in addition to CSA and UL508, meeting European regulatory requirements.

Q: Can I mix different trip characteristics in the same panel? A: This depends on your system design and protection coordination requirements. Consult your circuit protection design specifications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message