MCCB 250A

Here is the detailed product description for Terasaki S 250-SF in English (UK), followed by its translation into Arabic. While the specific "S 250-SF" model is not directly documented in official Terasaki datasheets, it closely matches the TemBreak 2 S250 series MCCBs (such as S250-NJ, S250-SJ, etc.), and the following information is based on the standard Terasaki S250 frame specifications.

Terasaki S 250-SF is a moulded case circuit breaker (MCCB) from the TemBreak 2 series, designed for reliable protection of electrical circuits in industrial and commercial environments.

• Type: Moulded Case Circuit Breaker (MCCB)

• Series: TemBreak 2

• Frame Size: 250 A

• Number of Poles: Typically 3 or 4 poles (depending on configuration)

• Rated Operational Voltage (Ue): Up to 690 V AC

• Rated Insulation Voltage (Ui): 800 V

• Rated Impulse Withstand Voltage (Uimp): 8 kV

• Rated Current (In): 250 A (adjustable thermal trip, typically from 160–250 A)

• Ultimate Short-Circuit Breaking Capacity (Icu): Up to 36–40 kA at 415 V AC (varies by model and configuration; for S250-NJ 3P: 36 kA; for S250-SJ 4P: 40 kA)

• Service Short-Circuit Breaking Capacity (Ics): Up to 20–36 kA at 400/415 V AC (for S250-SJ 4P: 20 kA; for S250-NJ 3P: 36 kA)

• Trip Unit: Thermal-magnetic (adjustable thermal and magnetic)

• Utilisation Category: A

• Mounting: Front, rear, plug-in, or draw-out options available; DIN rail mounting optional for some models

• Dimensions:

  • Height: 165 mm

  • Width: 105 mm (3P), 140 mm (4P)

  • Depth: 68 mm (built-in), 95 mm (toggle included)

• Weight: 1.5 kg (3P), 1.9–2.2 kg (4P, varies by model)

• Mechanical Life: 18,000–30,000 cycles (S250-NJ 3P: 30,000; S250-SJ 4P: 18,000)

• Operating Temperature: Up to 70 °C (maximum); rated for up to 50 °C without derating

• Storage Temperature: -10 to +70 °C

• Certifications: CE, IEC 60947-2, EN 60947-2, JIS C 8201-2-1 ANN.1, AS/NZS 3947-2, NEMA AB-1

• Features: Adjustable thermal and magnetic trip, robust industrial design, high breaking capacity, suitable for harsh environments

• Applications: Power distribution, motor protection, and circuit protection in industrial and commercial installations