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  Circuit Breakers (8,730 items)

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ABB 2CDS254001R0405 circuit breaker Miniature circuit breaker (3 offers) 
System pro M compact S200 miniature circuit breakers are current limiting. They have two different tripping mechanisms, the delayed thermal tripping mechanism for overload protection and the electr...
ABB
2CDS254001R0405
from £ 32.56*
per piece
Circuit breaker; 230/400VAC; Inom: 40A; Poles: 4; Charact: B; 6kA (1 offer) 
Manufacturer: LS ELECTRIC Mounting: for DIN rail mounting Rated voltage: 230/400V AC Operating temperature: -5...40°C Current rating: 40A IP rating: IP20 Characteristics: B Cross section of connect...
LS ELECTRIC
BKJ63ND 4P B40
from £ 15.54*
per piece
Hager MBN440E electrical enclosure accessory (1 offer)
Hager
MBN440E
from £ 39.24*
per piece
Circuit breaker; 230/400VAC; Inom: 40A; Poles: 4; Charact: B; 6kA (1 offer) 
Manufacturer: SIEMENS Mounting: for DIN rail mounting Rated voltage: 230/400V AC Operating temperature: -25...55°C Current rating: 40A IP rating: IP20 Characteristics: B Cross section of connecting...
Siemens
5SY6440-6
from £ 62.01*
per piece
Circuit breaker; 230/400VAC; Inom: 40A; Poles: 4; Charact: B; 6kA (2 offers) 
Manufacturer: EATON ELECTRIC Mounting: for DIN rail mounting Rated voltage: 230/400V AC Operating temperature: -25...75°C Current rating: 40A IP rating: IP20 Characteristics: B Cross section of con...
Eaton
FAZ6-B40/4
from £ 112.87*
per piece
Circuit breaker; 230/400VAC; Inom: 40A; Poles: 4; Charact: B; 6kA (1 offer) 
Manufacturer: LS ELECTRIC Mounting: for DIN rail mounting Rated voltage: 230/400V AC Operating temperature: -5...40°C Current rating: 40A IP rating: IP20 Characteristics: B Cross section of connect...
LS ELECTRIC
BKN 4P B40A
from £ 15.44*
per piece
Circuit breaker; 230/400VAC; Inom: 40A; Poles: 4; Charact: C; 10kA (1 offer) 
Manufacturer: LOVATO ELECTRIC Mounting: for DIN rail mounting Mechanical durability: 20000 cycles Rated voltage: 230/400V AC Operating temperature: -40...70°C Current rating: 40A IP rating: IP20 Ch...
LOVATO Electric
P1MB4PC40
from £ 19.22*
per piece
Hager NCN440 electrical enclosure accessory (1 offer)
Hager
NCN440
from £ 46.72*
per piece
Circuit breaker; 230/400VAC; Inom: 40A; Poles: 4; Charact: C; 10kA (3 offers) 
Manufacturer: SIEMENS Mounting: for DIN rail mounting Rated voltage: 230/400V AC Operating temperature: -40...70°C Current rating: 40A IP rating: IP20 Characteristics: C Cross section of connecting...
Siemens
5SY4440-7
from £ 82.22*
per piece
Circuit breaker; 230/400VAC; Inom: 40A; Poles: 4; Charact: C; 15kA (2 offers) 
Manufacturer: EATON ELECTRIC Mounting: for DIN rail mounting Mechanical durability: 10000 cycles Rated voltage: 230/400V AC Current rating: 40A IP rating: IP20 Characteristics: C Cross section of c...
Eaton
FAZ-C40/4
from £ 48.41*
per piece
Circuit breaker; 230/400VAC; Inom: 40A; Poles: 4; Charact: C; 25kA (1 offer) 
Manufacturer: EATON ELECTRIC Mounting: for DIN rail mounting Rated voltage: 230/400V AC Operating temperature: -25...55°C Current rating: 40A IP rating: IP20 Characteristics: C Cross section of con...
Eaton
AZ-4-C40
from £ 242.01*
per piece
Hager MCN440E electrical enclosure accessory (1 offer)
Hager
MCN440E
from £ 26.09*
per piece
Circuit breaker; 230/400VAC; Inom: 40A; Poles: 4; Charact: C; 6kA (1 offer) 
Manufacturer: LS ELECTRIC Mounting: for DIN rail mounting Rated voltage: 230/400V AC Operating temperature: -5...40°C Current rating: 40A IP rating: IP20 Characteristics: C Cross section of connect...
LS ELECTRIC
BKN 4P C40A
from £ 15.56*
per piece
Circuit breaker; 230/400VAC; Inom: 40A; Poles: 4; Charact: C; 6kA (3 offers) 
Manufacturer: SIEMENS Mounting: for DIN rail mounting Rated voltage: 230/400V AC Operating temperature: -25...55°C Current rating: 40A IP rating: IP20 Characteristics: C Cross section of connecting...
Siemens
5SY6440-7
from £ 80.84*
per piece
Circuit breaker; 230/400VAC; Inom: 40A; Poles: 4; Charact: C; 6kA (1 offer) 
Manufacturer: EATON ELECTRIC Mounting: for DIN rail mounting Rated voltage: 230/400V AC Operating temperature: -25...75°C Current rating: 40A IP rating: IP20 Characteristics: C Cross section of con...
Eaton
FAZ6-C40/4
from £ 36.08*
per piece
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