S203-Z20NA

Name: S203-Z20NA
Brand: ABB
SKU: S203-Z20NA

The ABB S203-Z20NA is a compact, current-limiting miniature circuit breaker designed for control panel devices. It features a tripping characteristic of Z, a rated current of 20A, and operates at 480Y/277V. Meets UL 1077 standards for enhanced electrical safety.

Product ModelS203-Z20NA

Material Number2CDS253103R0488

Product ID69173

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

1
1. Reliable OperationThe ABB S203-Z20NA ensures consistent and reliable operation in control panel devices, providing peace of mind in critical electrical applications.
2
2. Enhanced SafetyDesigned to meet UL 1077 standards, this circuit breaker offers enhanced electrical safety by limiting current and preventing short circuits.
3
3. Compact DesignIts compact size makes it ideal for a variety of applications, including those with limited space in control panels.
4
4. Delayed Thermal TrippingThe delayed thermal tripping mechanism provides additional protection by allowing for a brief overload condition before tripping, reducing false alarms.
5

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Standards

IEC/EN 60898-1 IEC/EN 60947-2 UL 1077

Tripping Characteristic

Rated Operational Voltage

acc. to IEC 60898-1 400 V AC acc. to IEC 60898-1 400 V acc. to IEC 60947-2 440 V AC

Operational Voltage

Maximum (Incl. Tolerance) 440 V AC

Rated Insulation Voltage (Ui)

acc. to IEC/EN 60664-1 440 V

Rated Impulse Withstand Voltage (Uimp)

4 kV at 2000 m 5 kV at Sea Level 6.2 kV