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Sigma Moulded Case Circuit Breaker

Sigma

Moulded Case Circuit Breaker

Ratings from 16A to 2000A. Available in 1-2-3-4 poles. Short circuit breaking capacity up to 150kA. Thermal-magnetic (fixed or adjustable) and electronic trip units. Wide range of accessories. Complies with EN-60947-2

Used in
End-Users / Consumers
Applications
LV Switchgear

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Datasheet available on request. Mention it in your quote notes.

Key specifications

ManufacturerSigma Elektrik (Istanbul, Turkey); standard IEC/EN 60947-2
Range (current catalogue)16 A to 2000 A; 1, 2, 3, 4 poles; Icu 20 kA to 150 kA
Thermal-magnetic fixedA125 (20-125 A, 20 kA), A160 (16-160 A, 25 kA), A250/ALT250/ALT400/ALT630 (160-630 A, 36 kA), ALT1250 (800-1250 A, 50 kA); Icu at 380-415 V AC
Thermal-magnetic adjustableB160/B250 (25/36 kA), BLT160-BLT630 (36 kA), BMT160-BMT1250 (20-1250 A, 50 kA), BST1600 (800-1600 A, 70 kA); Ir (0.7-1)xIn, Im (5-10)xIn (BST1600: 7-10xIn)
ElectronicBME160-BME1250 (63-1250 A, 50 kA, LSI), BSE1600/BSE2000 (800-2000 A, 70 kA, with ground fault); Ir (0.4-1)xIn
Higher breaking seriesSLT/BST (70 kA), ULT (100 kA), XLT (150 kA)
VoltageUe up to 690 V AC / 250 V DC (thermal-magnetic); Ui 750-1000 V; Uimp 8 kV; Ics = Icu
Also availableearth-leakage MCCBs; DC MCCBs 80-630 A, 1000/1500 V DC
Accessoriesmotor mechanism, shunt trip, undervoltage release, auxiliary and alarm contacts, rotary handles, terminal blocks, extension bars, padlock

From the manufacturer's datasheet. Ratings vary by model, so our engineers confirm the exact specification with your quotation.

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