Why Choose the ABB S204M-Z20 Miniature Circuit Breaker?
The ABB S204M-Z20 is a high-quality miniature circuit breaker (MCB) from the ABB System pro M compact S200M series, designed to provide dependable protection for AC electrical circuits. This 4-pole circuit breaker has a rated current of 20 A and a Z tripping characteristic, making it suitable for applications requiring sensitive protection and low short-circuit or overload thresholds.
With a rated breaking capacity of 10/15 kA, the S204M-Z20 provides effective interruption of overload and short-circuit faults. Its 4-pole configuration enables coordinated protection and switching across four conductors, making it suitable for a range of electrical distribution, control and equipment-protection applications.
Designed for convenient installation, the ABB S204M-Z20 is suitable for DIN-rail mounting and forms part of ABB's System pro M compact modular protection platform, supporting organised and reliable electrical installations.
Key Advantages
- Reliable circuit protection: Provides thermal-magnetic protection against overload and short-circuit conditions.
- 20 A rated current: Suitable for circuits designed to operate at a rated current of 20 A.
- Z tripping characteristic: Provides sensitive circuit protection for applications requiring a low magnetic tripping threshold.
- 10/15 kA breaking capacity: Provides dependable interruption capability under short-circuit conditions.
- 4-pole configuration: Provides coordinated protection and switching across four poles.
- DIN-rail mounting: Enables convenient installation in compatible distribution and control assemblies.
- System pro M compact platform: Forms part of ABB's modular circuit protection range.
Key Features
- ABB S204M-Z20 miniature circuit breaker
- System pro M compact S200M series
- 4-pole construction
- Z tripping characteristic
- Rated current: 20 A
- Rated breaking capacity: 10/15 kA
- AC supply
- DIN-rail mounting
- Thermal-magnetic overload and short-circuit protection
- Part number: 2CDS274001R0488
Reliable Z-Characteristic Protection for Sensitive Circuits
The Z tripping characteristic of the ABB S204M-Z20 is intended for applications where sensitive protection is required and the circuit can be affected by relatively low overcurrent conditions. Its characteristic provides a low magnetic tripping threshold compared with standard B, C and D characteristics, making it suitable for specific equipment and control applications.
The thermal protection function responds to sustained overload conditions, while magnetic protection provides rapid operation during high-current short-circuit faults. Combined with its 10/15 kA rated breaking capacity, the S204M-Z20 provides dependable protection for AC distribution and control circuits.
Typical Applications
- Industrial control and distribution panels
- Electronic equipment protection
- Sensitive electrical and control circuits
- Commercial electrical distribution systems
- Building services and electrical installations
- Multi-phase AC circuits
- Control and auxiliary circuits
- Modular distribution boards
