1250A Ceramic Vacuum Interrupter
  • Air Pro1250A Ceramic Vacuum Interrupter
  • Air Pro1250A Ceramic Vacuum Interrupter

1250A Ceramic Vacuum Interrupter

We are a factory specializing in the production of 1250A Ceramic Vacuum Interrupter ,The current of vacuum interrupters can be 400A, 630A, 1250A, 2000A, 2500A, 3150a, and even 4000A.We can customize the design.We look forward to becoming your long-term partner in China.

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Product Description

1. Product Introduction

Vacuum interrupter technology is used for repeated switching, motor surge current interruption, fault protection, overcurrent and short circuit protection. Its main function is to quickly extinguish the arc of medium and high voltage circuit, suppress the current and avoid accidents through good insulation of vacuum in the pipe.1250A ceramic vacuum interrupter is a good choice

2. Product Parameter (Specification)

TD-12/1250-25AD2(31.5AD2)(W)
Main Technical Specification
Parameter name Unit Value
1 Rated frequency Hz 50
2 Rated Voltage kV 12
3 Rated short-time(1min) power-frequency withstand voltage kV 42/48★
4 Rated lightning impulse withstand voltage(Peak) kV 85
5 Rated Current A 1250
6 Rated short-circuit breaking current kA 25/31.5
7 Rated short-circuit making current kA 63/80
8 Rated short-time withstand current kA 25/31.5
9 Rated peak withstand current kA 63/80
10 Breakding operations of rated short circuit breaking current Times 30
11 Circuit resistance at lowest rated contact force μΩ ≤20
12 Rated duration of short-circuit s 4
13 Closing force due to bellow and atmosphere N 90±40
14 Force required to hold contacts open at full stroke N 120±50
15 Mechanical endurance Times 10000
16 Contacts limit erosion mm 3
17 Storage life years 20
Mechanical date of matching switchgear
1 Clearance between open contacts mm 9±1
2 Average opening speed (0~75% contact gap) m/s 1.1±0.2
3 Average closing speed(30% contact gap-contact close position) m/s 0.7±0.2
4 Rated added external contact final force N 2200±100
3100±100
5 Contact bouncing duration at closing operation ms ≤2
6 Closing and Opening non-simultaneity of three-phase contacts ms ≤1
7 Maximum Rebound during opening mm ≤2
Meets or exceeds the electrical endurance requirements of
class E2 for autoreclosing duty per IEC 62271-100 and GB1984-2014
Note:“★”Within transformer oil or equivalent isolation medium

3. Product Feature and Application

777 electrical brand vacuum interrupter adopts corrugated ceramic insulation shell and copper tungsten tungsten carbide alloy material.

The 1250A Ceramic Vacuum Interrupter process flow makes the vacuum interrupter have the advantages of small volume, high insulation level, low closing value, long service life and convenient maintenance. The 1250A Ceramic Vacuum Interrupter is mainly used in power transmission and distribution control system and metallurgical industry. Mining, petroleum, chemical industry, railway, broadcasting, communication, industrial high-frequency heating and other power distribution systems.

4. Product Details

The 1250A Ceramic Vacuum Interrupter process is the core component of the breaking part of high voltage vacuum circuit breaker.

Generally speaking, this is a satisfactory conductor power supply, and the current is interrupted immediately in case of overload and short-circuit fault to ensure insulation.

It is the most ideal arc extinguishing device.

5. Product Qualification

1250A Ceramic Vacuum Interrupter process: CE, CCC, CQC, IP68, ISO9001-2015

Realize zero defect of products and wholeheartedly provide customers with high-quality products with stable quality, reliable performance and high added value.

6. Deliver,Shipping and Serving

1. Your inquiry will be replied within 24 hours.

2. We offer you professional service in fluent English.

3. Keep the mass production as the sample in high quality

4. Freight forwarder: faster, safer, and convenient.

5. Quality: we have QC on each process,provide high quality products.

Any problem or needed please feel free let us know, we are glad to service for you

We are factory, we can provide competitive price. And all the products will be shipped after quality inspection. Usually we quote within 24 hours after we get your inquiry.

7. FAQ

Q1: Are you a trading company or factory?

A1:We are factory with more than 10 years experience in this field.


Q2: how about the quality control in your factory?

A2: all products will be 100% inspected before shipment.


Q3: When can I get the price?

A3: Usually we will quote within 24 hours after receiving your inquiry.


Q4: What is the acceptable payment term?

A4: Credit Card, West Union, Paypal or T/T.


Q5: How could I get a sample?

A5: if you can’t buy our product in your local area, we can send a sample to you. Sample will be charged by retail price, and plus all related shipping costs. Express delivery charge depends on the quantity of the samples.

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