Circuit breaker VA3750
SALE AND PRODUCTION OF AUTOMATIC SWITCHES OF SERIES VA3750 TO NOMINAL CURRENTS 630A, 800A, 1000A, 1250 A 3P-2P AC/DC. Warranty from the manufacturer 3 years! ALWAYS AVAILABLE ANY COLLISION OF AUTOMATIC SWITCHES OF THE SERIES BA3750 ~380V, 400V, ~660V, 690V AC; =110V, =220V, =440V, =550V, =600V DC.
A wide range of VA3750N-nonselective and VA3750C-selective, stationary and sliding designs-
Circuit breaker VA3751N-bipolar, current-limiting air, for permanent (up to 550V) and alternating (up to 690V) currents, with electromagnetic releases
The VA3752N circuit-breaker is a three-pole, current-limiting air circuit, for a constant (up to 550V) and variable (up to 690V) currents, with electromagnetic releases
The VA3753N circuit-breaker is a bipolar, air, constant (up to 550V) and variable (up to 690V) currents, with a microprocessor release and electromagnetic releases
Circuit breaker VA3754N-bipolar, air, constant (up to 550V) and variable (up to 690V) currents, with microprocessor release and electromagnetic releases
Circuit breaker VA3753C-bipolar, selective air, for permanent (up to 550V) and variable (up to 690V) currents, with electromagnetic releases
Circuit breaker VA3754S-three-pole, selective air, for constant (up to 550V) and variable (up to 690V) currents, with microprocessor release
Circuit breaker VA3758S-three-pole, selective air, for constant (up to 550V) and variable (up to 690V) currents, without releases
Special features on the frames: VA3750N stationary and VA3750NV withdrawable-high-speed, VA3750C stationary and VA3750SV withdrawable-selective
Circuit breaker VA3751H, VA3751NV - two-pole, current-limiting air, for permanent (up to 550V) and variable (up to 660V) currents, with electromagnetic releases
Circuit breaker VA3752N, VA3752NV-three-pole, current-limiting air, for permanent (up to 550V) and variable (up to 660V) currents, with electromagnetic releases
Circuit breaker VA3753H, VA3753HV-bipolar, air, for constant (up to 550V) and variable (up to 660V) currents, with microprocessor release and electromagnetic releases
Circuit breaker VA3754H, VA3754NV-bipolar, air, for permanent (up to 550V) and variable (up to 660V) currents, with microprocessor release and electromagnetic releases
Circuit breaker VA3753S, VA3753SV - two-pole, selective air, for permanent (up to 550V) and variable (up to 660V) currents, with electromagnetic releases
Automatic circuit breaker VA3754S, VA3754SV-three-pole, selective air, for constant (up to 550V) and variable (up to 660V) currents, with microprocessor release
Automatic switch VA3758S, VA3758SV-three-pole, selective air, for constant (up to 550V) and variable (up to 660V) currents, without releases
Automatic circuit breakers VA3750 are designed to conduct current in normal mode and for selective protection in case of short circuits, overloads of unacceptable duration and unacceptable voltage drops, as well as for infrequent (up to 30 times a day) operational tripping of electrical circuits with a rated voltage up to 660 VAC 50 and 60 Hz. Switches can be equipped with an independent release, a zero-voltage release, free contacts and an electromagnetic drive.
For VA-3750 circuit-breakers in the stationary version, there are versions with front, rear or combined connection
Such climatic designs-
for moderate climate - A3750xxU3
for cold climate - А3750ххХЛ3
for the tropical climate - A3750xxT3
for river transport- A3750ххР
Technical characteristics of the switches:
1. Rated current, А 1250
2. Application category A.
3. The number of poles is 2, 3.
5. Rated currents IR, 250; 320; 400; 500; 630, 800, 1000, 1250.
9. Settings for the current tripping of electromagnetic releases, A 2500, 3200, 4000, 4200, 5500, 6300, 7000, 8000, 10000 and other
10. Rated operating short-circuit breaking capacity, kA:
- at a rated voltage of 380V 56.
- at a rated voltage of 660V 27.
11. Wear resistance of switches:
- total number of cycles is 12,000.
- number of cycles of the VO under a load of 8000.
12. Weight (stationary version), from 23.0 kg., Electromagnetic drive from 26.4 kg.
13. Overall dimensions mm (length / width, height).
stationary version - 525/225/170
stationary version with electric drive - 525/260/280
A sliding version with a manual drive- 388/318/559
Extensible version with electric drive- 388/318/559
Specialist. execution on frames
stationary design- 472/385/190 (up to 400A), 532/385/190 (up to 1000A)
stationary version with electric drive - 472/385/297 (up to 400A), 532/385/297 (up to 1000A)
The withdrawable version with manual drive- 465/532/598
Retractable version with electric drive- 465/532/451