2Z16UM 16A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 2Z16UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 16A at 480V AC / 80V DC with lever actuation and DIN rail mounting. This component is active in production and widely used in industrial control and distribution applications. Substitute parts become necessary due to inventory constraints, supply chain disruptions, or specific application requirements where alternative thermal characteristics or certifications are required.

Key Parameters

Parameter	Value
Manufacturer	Altech Corporation
Current Rating	16A
Voltage Rating - AC	480V
Voltage Rating - DC	80V
Breaker Type	Thermal Magnetic
Mounting Type	DIN Rail
Actuator Type	Lever
Number of Poles	2
Series	V-EA
Approval Agencies	CSA, UL508
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

All substitute parts for the 2Z16UM maintain identical electrical and mechanical specifications across the following critical parameters:

Current Rating: 16A (all substitutes)
Voltage Rating: 480V AC / 80V DC (all substitutes)
Breaker Type: Thermal Magnetic (all substitutes)
Mounting Type: DIN Rail (all substitutes)
Actuator Type: Lever (all substitutes)
Number of Poles: 2 (all substitutes)
Series: V-EA (all substitutes)
RoHS Status: ROHS3 Compliant (all substitutes)

The primary distinction among substitute parts lies in their thermal trip characteristics, designated by the letter designation in the part number (B, C, D, G). These designations define the thermal response curve and trip point thresholds, allowing selection based on specific circuit protection requirements. All substitutes are manufactured by Altech Corporation and are active products with current inventory availability.

Parameter Comparison

Part Number	Current Rating	Voltage AC	Voltage DC	Breaker Type	Mounting	Poles	Approval Agencies	Inventory (Pcs)
2Z16UM	16A	480V	80V	Thermal Magnetic	DIN Rail	2	CSA, UL508	1075
2B16UM	16A	480V	80V	Thermal Magnetic	DIN Rail	2	CSA, UL508, VDE	1011
2C16UM	16A	480V	80V	Thermal Magnetic	DIN Rail	2	CSA, UL508, VDE	1087
2D16UM	16A	480V	80V	Thermal Magnetic	DIN Rail	2	CSA, UL508, VDE	783
2G16UM	16A	480V	80V	Thermal Magnetic	DIN Rail	2	CSA, UL508	724

Engineering Selection Recommendations

All substitute parts maintain full electrical and mechanical compatibility with the 2Z16UM. Selection among substitutes should be based on:

Certification Requirements: Parts 2B16UM, 2C16UM, and 2D16UM carry VDE certification in addition to CSA and UL508, providing broader international compliance for applications requiring European standards. Parts 2Z16UM and 2G16UM carry CSA and UL508 certifications only.

Thermal Characteristic Designation: The letter designation (B, C, D, G, Z) in each part number specifies the thermal trip curve. Selection must align with the specific circuit protection profile required by the application.

Inventory Availability: All parts are currently in stock with sufficient quantities for production deployment. 2C16UM offers the highest inventory level at 1087 pieces.

Product Status: All parts maintain active production status with equivalent supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can 2B16UM, 2C16UM, 2D16UM, or 2G16UM be used as direct replacements for 2Z16UM?

A: Yes. All substitute parts share identical current rating (16A), voltage ratings (480V AC / 80V DC), mounting type (DIN Rail), pole configuration (2-pole), and actuator type (Lever). The thermal trip characteristic differs based on the letter designation, which must be selected according to circuit protection requirements.

Q: What is the significance of the letter designation in the part number?

A: The letter (B, C, D, G, Z) designates the thermal trip curve and response characteristics of the breaker. Each designation represents a specific thermal threshold and trip point profile. Selection must match the application's circuit protection specification.

Q: Are there differences in certifications among the substitute parts?

A: Parts 2B16UM, 2C16UM, and 2D16UM include VDE certification alongside CSA and UL508. Parts 2Z16UM and 2G16UM carry CSA and UL508 only. Applications requiring European compliance should specify parts with VDE certification.

Q: Is packaging identical across all substitute parts?

A: Yes. All parts are supplied in bulk packaging as standard.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed maintain ROHS3 compliance and REACH unaffected status.

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