Why Choose the ABB S203MT-Z1.6NA Miniature Circuit Breaker?
The ABB 2CDO273106R0258, also identified as S203MT-Z1.6NA, is a compact and dependable miniature circuit breaker (MCB) designed for overload and short-circuit protection in electrical distribution and control panel applications. As part of the ABB System pro M compact S200M series, it provides reliable current limiting protection for industrial, commercial and specialist electrical systems.
This MCB uses a Z type tripping characteristic, making it suitable for sensitive circuits where rapid magnetic tripping is required. The S203MT-Z1.6NA combines thermal overload protection with electromechanical short-circuit protection, helping safeguard cables, equipment and connected loads from damaging fault currents.
With a rated current of 1.6 A and a 3-pole configuration, the ABB S203MT-Z1.6NA is well suited to three-phase auxiliary circuits, control systems and precision electrical installations. Its DIN rail mounting design allows straightforward installation inside distribution boards, switchgear assemblies and machine control panels.
Key Advantages
- Compact miniature circuit breaker for circuit protection.
- 1.6 A rated current for low-current control and auxiliary circuits.
- 3-pole configuration for three-phase electrical protection.
- Z curve tripping characteristic for fast response to short-circuit faults.
- Current limiting design helps reduce fault energy and equipment stress.
- DIN rail mounting for fast installation in control panels and distribution boards.
Key Features
- ABB System pro M compact S200M series.
- 1.6 A nominal current rating.
- 3-pole miniature circuit breaker.
- Z type tripping curve for sensitive circuit protection.
- Thermal tripping mechanism for overload protection.
- Electromechanical tripping mechanism for short-circuit protection.
- High performance current limiting operation.
- Modular DIN rail design for electrical enclosures.
Miniature circuit breakers such as the ABB S203MT-Z1.6NA protect electrical circuits by automatically disconnecting the supply when overloads or short-circuit faults occur. This helps prevent damage to wiring, equipment and downstream components while improving overall electrical safety.
The Z curve characteristic is designed for applications that require rapid tripping at lower short-circuit current levels. This makes the device particularly useful for sensitive electronic circuits, control equipment and installations where fast fault interruption is required.
Typical Applications
- Industrial control panels and automation systems.
- Three-phase auxiliary and control circuits.
- Electrical distribution boards and switchgear assemblies.
- Machine building and OEM equipment.
- Protection of sensitive electronic loads.
- Commercial and industrial low-voltage installations.
