2CDS251001R0825 ABB S201-B100 MCB 6 kA 1P Type B 100 A

Why Choose the ABB S201-B100 Miniature Circuit Breaker?

The ABB S201-B100 is a robust and reliable single-pole miniature circuit breaker (MCB) designed to protect low-voltage electrical circuits against overloads and short circuits. As part of the proven ABB System pro M compact S200 series, it combines dependable circuit protection with a compact modular design suitable for distribution boards and electrical installations.

The S201-B100 uses a Type B tripping characteristic, providing rapid magnetic operation for circuits with relatively low inrush currents. Its thermal-magnetic operating mechanism provides overload and short-circuit protection without requiring an external power supply, helping protect cables and connected equipment from damaging overcurrents.

With a rated current of 100 A, a single-pole configuration and a rated short-circuit breaking capacity of 6 kA, the S201-B100 is suitable for high-current final and distribution circuits where a B-curve protective characteristic is required. Its standard DIN-rail format enables straightforward installation within compatible electrical distribution equipment.

Key Advantages

• Reliable miniature circuit breaker for overload and short-circuit protection.
• 100 A rated current for high-current low-voltage circuits.
• Single-pole configuration for individual conductor protection.
• Type B tripping characteristic suited to circuits with relatively low inrush currents.
• 6 kA rated short-circuit breaking capacity.
• Thermal-magnetic operation provides automatic overcurrent protection.
• Compact modular construction for efficient use of distribution-board space.
• DIN-rail mounting supports straightforward installation and replacement.

Key Features

• ABB System pro M compact S200 series.
• 100 A rated current.
• 1-pole configuration.
• B tripping characteristic.
• 6 kA rated short-circuit breaking capacity.
• Thermal-magnetic overload and short-circuit protection.
• 230/400 V AC rated operational voltage.
• 50/60 Hz operating frequency.
• DIN-rail mounting for modular distribution equipment.
• Suitable for residential, commercial and industrial electrical distribution applications.
• ABB order code 2CDS251001R0825.

Reliable Overload and Short-Circuit Protection

Miniature circuit breakers such as the ABB S201-B100 automatically disconnect a circuit when excessive current is caused by an overload or short circuit. The thermal element responds to sustained overload conditions, while the magnetic mechanism provides rapid operation under high short-circuit currents.

The Type B characteristic is designed for circuits where expected inrush currents are comparatively low. Combined with the S200 series' modular construction and established thermal-magnetic protection technology, this makes the S201-B100 suitable for a broad range of correctly engineered low-voltage distribution applications.

Typical Applications

• Low-voltage electrical distribution boards.
• Commercial building electrical systems.
• Industrial control and distribution panels.
• High-current final and distribution circuits.
• Circuits requiring a Type B tripping characteristic.
• Electrical installations requiring overload and short-circuit protection.