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ZW32-12MA/630 Permanent Magnetic Outdoor Vacuum Circuit Breaker.jpg

ZW32-12MA/630 China Permanent Magnetic Outdoor Vacuum Circuit Breaker - Reliable Suppliers & Factory Solutions

The ZW32-12MA/630 is a state-of-the-art permanent magnetic outdoor vacuum circuit breaker designed for 12kV, 50Hz electrical systems. This innovative product features a magnetic holding mechanism that minimizes the number of components, significantly enhancing its reliability and lifespan. As a compact and lightweight solution, it requires no maintenance and is built to withstand extreme environmental conditions, including harsh weather and pollution, making it ideal for substations, industrial plants, and rural grids up to 3000m altitude. Sourced from trusted China suppliers and manufactured in our advanced factory, the ZW32-12MA/630 ensures exceptional performance and durability for your electrical infrastructure needs

Product Details

Technical Specification

Item			Units	Parameters
Rated voltage			KV	12
Rated insulation level	1min power frequency withstand voltage	Dry	KV	To earth, phase to phase 42 Fracture 48
		Wet		External insulation 34
	Lightning impulse withstand voltage (peak)			To earth, phase to phase 75 Fracture 85
Rated frequency			Hz	50
Rated current			A	630
Rated short-circuit breaking current			KA	12.5 / 16 / 20
Rated short-circuit closed current (peak)			KA	31.5 / 40 / 50
Rated peak withstand current			KA	31.5 / 40 / 50
Rated short-time withstand current (4s)			KA	20
Rated operating sequence				O-0.3s-CO-180s-CO
Switch on / opening time			ms	25–50 / 15–50
Rated short-circuit breaking current breaking times			Times	30
Mechanism life			Times	10,000
The control circuit and auxiliary circuit 1 min power frequency withstand voltage			V	2000
Rated operating voltage and auxiliary circuit rated voltage			V	DC220 / AC220
Over-current tripper	Rated current		A	5
	Tripping current precision		%	±10

Product Model

Dimension

Frequently Asked Questions

Q What is the rated voltage of this vacuum circuit breaker?

The rated voltage of this vacuum circuit breaker is 12 KV, making it suitable for medium-voltage power distribution systems and various industrial applications.

Q What are the available rated short-circuit breaking current options?

The breaker is available in three rated short-circuit breaking current levels: 12.5 KA, 16 KA, and 20 KA, providing flexibility to match different fault current requirements in your system.

Q What is the rated operating sequence of this circuit breaker?

The rated operating sequence is O-0.3s-CO-180s-CO. This means the breaker can perform an open operation, followed by a close-open operation after 0.3 seconds, and another close-open operation after 180 seconds.

Q What is the mechanical lifespan of this vacuum circuit breaker?

The mechanism life is rated at 10,000 operations, ensuring long-term reliability and reduced maintenance costs over the product's service life.

Q What control and auxiliary circuit voltages are supported?

The breaker supports both DC 220V and AC 220V for rated operating voltage and auxiliary circuit rated voltage, offering compatibility with a wide range of control systems.

Q What is the 1-minute power frequency withstand voltage for dry conditions?

Under dry conditions, the 1-minute power frequency withstand voltage is 42 KV (to earth and phase to phase) and 48 KV (fracture), ensuring robust insulation performance in standard operating environments.