C25H32M220

What type of device is this and what is it used for?

It is a fixed-mount moulded case circuit breaker designed for motor protection, combining overload and short-circuit protection functions via an electronic trip unit (MicroLogic 2.2 M).

How many poles does it have and what does the protected pole configuration mean?

It is a 3-pole device (3P) with 3 protected poles (3D), meaning all three phases are protected and monitored by the trip unit.

What is the rated current and how is it specified?

The rated current is 220 A at 65 °C. The long-time (thermal) pick-up Ir is adjustable from 100 to 220 A in 9 settings, allowing you to match the motor/load current.

What is the rated operational voltage and suitable network type?

It is intended for AC networks at 50/60 Hz with a rated operational voltage up to 690 V AC.

What short-circuit breaking performance can I expect?

It is an H performance level unit (70 kA at 415 V AC). Typical ultimate short-circuit breaking capacities (Icu) include 70 kA at 380/415 V AC, 65 kA at 440 V AC, and 10 kA at 660/690 V AC (IEC 60947-2).

Which protection functions are included in the trip unit?

The trip unit provides L (long-time overload), So (short-time short-circuit with fixed delay), and I (instantaneous short-circuit) protection functions.

Are the protection settings adjustable?

Yes. Long-time pick-up Ir is adjustable (100–220 A). Short-time pick-up Isd is adjustable from 5 to 13 × Ir (9 settings). The instantaneous pick-up Ii is fixed at 3300 A. Time delays for long-time and short-time are fixed by design.

What motor starting/tripping behaviour does it support?

It supports motor tripping classes 5, 10, and 20 with defined long-time delay characteristics, helping accommodate different starting profiles while maintaining protection coordination.

Does it include earth-leakage (residual current) protection?

No. Earth-leakage protection is not included on this version, so a separate solution is required if residual current protection is needed.

Can it be used as an isolator?

Yes. It is suitable for isolation in accordance with EN/IEC 60947-2.

What are the installation and mounting details?

It is a fixed device intended for backplate mounting. It can be mounted horizontally or vertically (flat on the back). Connections are front-facing for both top and bottom, with a 35 mm connection pitch.

What are the key physical dimensions and weight?

Overall dimensions are approximately 105 mm (W) × 161 mm (H) × 86 mm (D), with a net weight around 2.4 kg.

What local indication does the unit provide?

It includes local LED indication: a flashing green LED for ready-to-operate, and a red LED at 95% Ith to indicate temperature above the set point.

Are auxiliary accessories supported?

Yes. The device provides 5 slots for electrical auxiliaries, enabling configuration with compatible auxiliary functions where required.

What are the environmental ratings and operating conditions?

Typical ratings include IP40 and IK07. Operating ambient temperature is -25 to 70 °C, storage is -50 to 85 °C, and relative humidity is 0–95%. Operating altitude is 0–2000 m without derating and 2000–5000 m with derating.

How much heat does it dissipate in operation?

Power dissipation per pole is specified around 13.55 W (some documentation variants state 17.6 W per pole), which should be considered when assessing enclosure thermal performance.

What durability figures are specified for switching life?

Mechanical durability is specified at 20,000 cycles. Electrical durability is specified up to 20,000 cycles at 440 V (In/2), 10,000 cycles at 440 V (In), 10,000 cycles at 690 V (In/2), and 5,000 cycles at 690 V (In).

Which standards does it conform to?

It is specified to EN/IEC 60947-2. The insulation ratings include Ui 800 V AC and impulse withstand Uimp 8 kV.

Does it include phase unbalance motor protection?

Yes. Complementary motor protection includes phase unbalance functionality as part of the protection feature set.