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China FZN25-12D Series Indoor High Voltage Vacuum Load Switch - Reliable Suppliers & Factory for 12kV Solutions

Introducing the FZN25-12D Series, a cutting-edge indoor high voltage vacuum load switch specifically engineered for 12kV, 50Hz three-phase AC systems. Perfectly suited for both ring networks and terminal power supplies, this product features a direct-acting mechanism that seamlessly connects the isolating fracture with a vacuum interrupter, ensuring reliable load control. Additionally, the composite apparatus known as FZRN25 incorporates a fuse capable of breaking currents up to the rated short-circuit values. This compact and lightweight solution can be operated both manually and electrically, providing safe maintenance with interlocked grounding. Meeting class II pollution standards, the FZN25-12D Series is an essential choice for those seeking high-quality electrical solutions from trusted China suppliers and manufacturers. Ensure safety and efficiency with this industry-leading vacuum load switch from our factory.

Product Details

Technical Specification

No.	Item		Units	Parameters
				FZN25-12D/T630-20	FZRN25-12D/T125-31.5
1	Rated voltage		kV	12
2	Rated frequency		Hz	50
3	Rated Current		A	630	125
4	Rated insulation level	1min frequency voltage	kV	Interrupter Fracture 30, on the ground, phase-to-phase 42, isolation Fracture 48
		Lightning impulse withstand voltage	kV	On the ground, phase-to-phase 75, isolation Fracture 85
5	Rated dynamic stability current (peak)		kA	50	-
6	4s thermal current		kA	20	-
7	Rated active load breaking current		A	630	125
8	Rated closed-loop breaking current		A	630	125
9	Rated cable charging breaking current		A	10	10
10	Breaking load transformer		kVA	1250	1250
11	Rated short-circuit breaking current		kA	-	31.5
12	Rated transfer current, rated current transfer		A	-	2000
13	Fuse Model		-	-	SDLAJ-12 / SFLAJ-12
14	Impact energy output		J	-	2-5 (medium)
15	Rated short circuit making current		kA	50
16	Ground switch rated Dynamic current		kA	50
17	Grounding switch 2s thermal current		kA	20
18	Secondary circuit Rated voltage		V	AC/DC 220 / 110
19	Mechanical life		Times	1000

Product Model

Dimension

Frequently Asked Questions

Q1: What is the rated voltage and frequency of the FZN25-12D series?

The FZN25-12D series has a rated voltage of 12 kV and operates at a rated frequency of 50 Hz.

Q2: What is the rated current difference between the two models?

The model FZN25-12D/T630-20 has a rated current of 630 A, while the FZRN25-12D/T125-31.5 model has a rated current of 125 A.

Q3: Which fuse models are recommended for the FZRN25-12D model?

The recommended compatible fuse models for the FZRN25-12D/T125-31.5 are SDLAJ-12 and SFLAJ-12.

Q4: What is the mechanical service life of this switch series?

Both models in the series are designed for a mechanical endurance of 1000 operations (times).

Q5: What are the secondary circuit rated voltage options?

The secondary circuit supports a rated control voltage of AC/DC 220V or 110V.