Circuit breaker ABB SH201-B16 1P B 16A (MPN 2CDS211001R0165)

ABB SH201-B16 is a single-pole miniature circuit breaker with a B characteristic and a nominal current rating of 16 A. Designed for installation on standard DIN rails in residential and light-commercial distribution boards, this device provides overcurrent and short-circuit protection for single-phase circuits. The breaker trips on overloads and short circuits to isolate faulty circuits and help prevent wiring damage and fire risks.

Advantages

The circuit breaker offers compact DIN-rail mounting and a single-pole design that saves space in distribution panels. Its B-type tripping characteristic ensures sensitive protection for circuits with mainly resistive loads and moderate inrush currents, such as lighting and general-purpose sockets. The device is manufactured by a recognized brand and is built to provide consistent tripping performance and mechanical durability under normal operating conditions.

Suitable for

• Protection of lighting circuits in homes and apartments
• Protection of socket outlets and small appliance circuits
• Use in small commercial installations and service panels
• DIN-rail distribution boards where single-pole protection is required

When it may not be suitable

This single-pole B-characteristic breaker is not intended for three-phase distribution or for circuits with heavy motor loads that produce high inrush currents; in those cases a C- or D-type breaker or a multi-pole device may be more appropriate. It is also not a residual-current device and does not provide earth-fault protection, so a separate RCD/RCBO should be used where protection against electric shock or leakage currents is required.

Key specifications

• Pole count: 1 pole (single-pole)
• Tripping characteristic: B-type (thermal-magnetic)
• Nominal current: 16 A
• Application: overcurrent and short-circuit protection for single-phase circuits
• Mounting: DIN-rail (standard distribution boards)
• Rated breaking capacity: suitable for typical residential and light-commercial networks (refer to technical datasheet for exact kA rating)
• Operating environment: indoor electrical distribution panels

How to use

Install the breaker on a compatible DIN rail in the distribution board following local electrical codes and safety practices. Connect the supply conductor to the input terminal and the protected circuit conductor to the output terminal, ensuring proper tightening of terminals and correct polarity. After wiring, switch the breaker to the ON position; test the circuit under normal conditions. For maintenance or fault isolation, switch the device to OFF and verify that the upstream supply is isolated before working on the circuit.

What to consider before purchase

• Confirm that a single-pole 16 A B-characteristic breaker matches the load type and inrush current profile of the circuits to be protected.
• Check compatibility with the distribution board's DIN-rail system and available module width.
• Determine whether additional earth-fault protection (RCD or RCBO) is required for safety or code compliance.
• Verify the required breaking capacity for your installation and consult the technical datasheet if higher kA ratings are needed.

Usage recommendations

Use this ABB SH201-B16 breaker for single-phase lighting and general-purpose circuits where a B-type 16 A protection is appropriate. Combine with suitable upstream protection and RCDs where required by regulation. Periodically check connections and the mechanical condition of the breaker; replace if signs of wear or repeated nuisance tripping occur.