Why Choose the ABB 2CDS381103R0278 S301P-Z2NA Miniature Circuit Breaker?
The ABB 2CDS381103R0278, also known as the S301P-Z2NA, is a premium miniature circuit breaker (MCB) designed to provide exceptionally sensitive protection against overloads and short circuits in industrial and commercial electrical installations. As part of the renowned ABB System pro M compact S300P series, it delivers outstanding reliability, compact installation and compliance with international IEC and UL standards.
With a 2 A rated current, a Type Z tripping characteristic and a high 25 kA short-circuit breaking capacity, the S301P-Z2NA is specifically engineered for protecting sensitive electronic equipment including PLCs, instrumentation, semiconductor devices, control circuits and other low-current applications. Its extremely fast magnetic trip characteristic minimises fault energy reaching delicate electronic components.
The 1P+N configuration switches both the phase and neutral conductors simultaneously, while the compact DIN rail design, fail-safe bi-directional screw terminals and integrated contact position indicator make installation and maintenance straightforward in industrial control panels and electrical distribution systems.
Key Advantages
- Premium miniature circuit breaker for sensitive electronic equipment.
- 2 A rated current for low-current circuit protection.
- Type Z tripping characteristic for extremely fast fault clearance.
- High 25 kA short-circuit breaking capacity.
- 1P+N configuration switches phase and neutral together.
- Ideal for PLCs, instrumentation and semiconductor equipment.
- Compact DIN rail mounted design.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S300P series.
- S301P-Z2NA miniature circuit breaker.
- 2 A rated current.
- Type Z tripping curve.
- 1P+N pole configuration.
- 240 V AC rated operational voltage.
- Suitable for selected 72 V DC applications.
- 25 kA short-circuit breaking capacity.
- Thermal-magnetic release mechanism.
- DIN rail mounting with fail-safe screw terminals.
Designed for Sensitive Electronic Circuits
The ABB S301P-Z2NA automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping to protect valuable electronic equipment from damage. Its Type Z magnetic release operates significantly faster than conventional circuit breakers, making it particularly suitable for semiconductor devices, PLCs, instrumentation and other sensitive control systems.
Widely specified by OEM machine builders, industrial panel manufacturers and automation engineers, the ABB S300P range delivers dependable circuit protection, excellent durability and long operational life even in demanding industrial environments.
Typical Applications
- PLC control systems.
- Industrial automation equipment.
- Electronic control panels.
- Instrumentation circuits.
- Semiconductor equipment.
- Laboratory instrumentation.
- OEM machinery.
- Critical low-current electrical installations.
