C254250S

What does this device do in an electrical panel?

It is a switch disconnector used to manually switch circuits on/off and provide isolation for downstream equipment in distribution applications. It is suitable for isolation in accordance with EN/IEC 60947-3.

How many poles does it have and what systems is it suited to?

It is a 4-pole (4P) device, commonly used for three-phase systems where neutral switching/isolation is also required.

What is the thermal current rating?

The conventional free-air thermal current (Ith) is 250 A at 50 °C.

What are the rated operational currents for AC switching duties?

For AC-22A and AC-23A duties, the rated operational current (Ie) is 250 A at 50/60 Hz across 220 to 690 V AC.

Can it be used on DC circuits as well as AC?

Yes. It supports DC-22A and DC-23A duties at 250 A, with voltage dependent on pole configuration (for example 250 V DC with 1 pole, 500 V DC with 2 poles in series, and up to 750 V DC with 3 poles in series).

What is the maximum rated operational voltage?

Rated operational voltage (Ue) is up to 690 V AC (50/60 Hz). For DC use, it can be configured up to 750 V DC when using 3 poles in series (application dependent).

Does it provide a visible break?

No. It has a contact position indicator, but it does not provide a visible break.

What utilisation categories does it cover and what do they indicate?

It is rated for AC-22A, AC-23A, DC-22A and DC-23A. These categories indicate suitability for switching different types of loads (for example, AC-23A is typically associated with more demanding motor-related switching duties than AC-22A).

What short-time withstand current can it handle?

Rated short-time withstand current (Icw) is 3.5 kA for 1 s, 3.5 kA for 3 s, and 1.35 kA for 20 s.

What is the rated short-circuit making capacity?

Rated short-circuit making capacity (Icm) is up to 330 kA when used with an upstream protection circuit breaker. On its own, the switch-disconnector making capacity is 4.9 kA.

What is the insulation and impulse withstand rating?

Rated insulation voltage (Ui) is 800 V AC (50/60 Hz) and rated impulse withstand voltage (Uimp) is 8 kV.

How is it operated?

It uses a toggle control for manual switching.

How is it mounted and how are the connections made?

It is a fixed mounting design with backplate mounting support. Both the upstream and downstream connections are made from the front, with a 35 mm connection pitch.

What are the mechanical and electrical endurance ratings?

Mechanical durability is rated at 20,000 cycles. Electrical durability depends on duty and voltage; for example, up to 15,000 cycles at 440 V AC (AC-22A/AC-23A) at In/2, and up to 3,000 cycles at 690 V AC at In.

What ingress and impact protection ratings does it have?

It is rated IP40 for ingress protection and IK07 for impact resistance (as per IEC standards).

What are the operating and storage temperature ranges?

Ambient operating temperature range is -25 to 70 °C, and ambient storage temperature range is -50 to 85 °C.

What are the overall dimensions and weight for panel planning?

Overall dimensions are approximately 140 mm (W) x 161 mm (H) x 86 mm (D). Net weight is approximately 2.2 kg. This helps with enclosure space and mounting layout planning.

What electrical shock protection class is specified?

It is specified as Class II for electrical shock protection.

What standards is it designed to comply with?

It is designed to comply with EN/IEC 60947-1 and EN/IEC 60947-3, which cover low-voltage switchgear/controlgear and switch disconnectors.

Where is this device typically used?

It is typically used in low-voltage distribution panels where a robust on/off switching device with isolation capability is required for feeders, sub-distribution circuits, or load switching within industrial and commercial installations.

What should I confirm before selecting it for a DC application?

Confirm the required DC voltage and ensure the correct pole-in-series arrangement is feasible in your design (for example, 2 poles in series for 500 V DC or 3 poles in series for 750 V DC), and verify the duty category (DC-22A or DC-23A) matches the load switching requirements. If needed, reference the unit as Schneider C254250S when documenting the build.