2CDS251001R0558 ABB S201-Z40 Miniature Circuit Breaker 1 Pole 40A Type Z 10kA

2CDS251001R0558 ABB S201-Z40 Miniature Circuit Breaker 1 Pole 40A Type Z 10kA

ABB S201Z40 single-pole miniature circuit breaker with 40 A rated current, Z characteristic tripping curve, 10 kA breaking capacity and DIN rail mounting.

SKU: S201Z40Alt SKU: S201-Z40MPN: 2CDS251001R0558
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£29.52

Why Choose the ABB S201Z40 Miniature Circuit Breaker?

The ABB S201Z40 is a single-pole miniature circuit breaker (MCB) from ABB's trusted System pro M compact S200 range. Designed with a Z characteristic tripping curve and a 40 A rated current, it provides highly sensitive protection for electronic equipment, control circuits and semiconductor devices where rapid disconnection during low fault currents is essential.

The Z-curve trips magnetically between approximately 2 and 3 times the rated current, making it ideal for protecting sensitive electronic loads that require faster fault clearance than standard B, C or D curve circuit breakers.

Suitable for residential, commercial and industrial installations, the ABB S201Z40 combines dependable overload and short-circuit protection with robust DIN rail mounting, high-quality construction and compatibility with the extensive ABB System pro M compact accessory range.

Key Advantages

  • High-quality ABB single-pole miniature circuit breaker.
  • 40 A rated current.
  • Z characteristic for sensitive electronic circuit protection.
  • 10 kA breaking capacity.
  • Thermal overload and magnetic short-circuit protection.
  • Fully compatible with ABB System pro M compact accessories.

Key Features

  • ABB S201Z40 miniature circuit breaker.
  • Single-pole (1P) configuration.
  • 40 A rated current.
  • Z tripping characteristic.
  • 10 kA breaking capacity.
  • DIN rail mounting.
  • Compact 17.5 mm module width.
  • Thermal-magnetic trip mechanism.
  • Positive contact position indication.
  • Suitable for electronic and control circuit protection.

Optimised Protection for Sensitive Electronic Equipment

Unlike conventional B, C or D curve circuit breakers, the ABB S201Z40 is specifically engineered for circuits containing sensitive electronic equipment, programmable controllers, instrumentation and semiconductor devices. Its Z characteristic ensures rapid magnetic tripping at low fault currents, helping minimise damage to valuable equipment.

Manufactured using ABB's proven thermal-magnetic protection technology, the S201Z40 delivers dependable overload protection, excellent short-circuit interruption capability and long operational life in demanding commercial and industrial environments.

Typical Applications

  • Electronic equipment protection.
  • PLC and automation control panels.
  • Instrumentation circuits.
  • Semiconductor protection.
  • Industrial control systems.
  • Commercial electrical distribution.

Technical Specifications

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Breaking Capacity 6 kA
Current 40 A
Phase Single Phase
Poles 1-pole
Device Type MCB
Trip Curve Z curve
Manufacturer ABB
Series System pro M compact S200
Model S201Z40
Catalogue Number 2CDS251001R0558
Product type Miniature Circuit Breaker (MCB)
Number of poles 1
Rated current 40 A
Trip characteristic Z Curve
Rated operational voltage 230/400 V AC
Maximum insulation voltage 440 V AC
Breaking capacity 10 kA
Frequency 50/60 Hz
Mounting type DIN rail
Module width 17.5 mm
Terminal type Twin terminals with captive screws
Protection rating IP20
Standards IEC/EN 60898-1, IEC/EN 60947-2
HS Code 85362010
Country of Manufacture Germany

Frequently Asked Questions

What is the ABB S201Z40?

The ABB S201Z40 is a single-pole 40 A miniature circuit breaker with a Z characteristic designed to protect sensitive electronic equipment and control circuits.

What is a Z curve circuit breaker used for?

A Z curve MCB trips very quickly at low fault currents, making it ideal for protecting electronic devices, PLCs, instrumentation and semiconductor equipment.

What is the breaking capacity of the ABB S201Z40?

The S201Z40 provides a 10 kA short-circuit breaking capacity.

How many poles does this circuit breaker have?

The ABB S201Z40 is a single-pole (1P) miniature circuit breaker.

Which standards does the ABB S201Z40 comply with?

It complies with IEC/EN 60898-1 and IEC/EN 60947-2 for miniature circuit breakers.

Trusted Circuit Protection from ABB

ABB System pro M compact miniature circuit breakers are trusted worldwide for providing dependable overload and short-circuit protection across residential, commercial and industrial electrical installations.