Earth switch

JN15-24/31.5 Indoor high voltage grounding switch

Product Description

Main technical parameters
Rated voltageKV12
Rated short time withstand currentKA31.5
Rated short circuit durationS4
Rated short circuit making currentKA80
Rated peak withstand currentKA80
Rated nsulation level PF withstand voltage (1 min)KV

Phase to earth

Phase to phase

Lightning impulse withstand voltage125
Mechanical lifeSecond2000

JN15-24/31.5 Indoor AC high voltage earthing switch

JN15-24/31.5 Indoor AC high voltage earthing switch is applies to power system of 24kV and three-phase AC 50Hz.

Product feature

1. Indoor AC high voltage earthing switch is Advanced design and steady performance. 

2. Simple structures, installation and adjustment. 

3. Fast breaking and making capability. 

4. Handsome appearance and delicate manufacture craft. 5. Usable and scientific apparatus, be operated on both sides(right and left).


JN15-24/31.5 indoor AC high voltage earthing switch is an advanced level product with high-tech parameters performance.After comprehensive evaluation,it conforms to GB1985 and IEC62271 standard ,applies to power system of 24kV and three-phase AC 50Hz.It owns short-circuit making capacity to protect other electric equipment not being damaged.Can be used with various high voltage switchgear,also play a protective role in the high-voltage electrical equipment overhaul.


Grounding switches use resin insulators, on which live parts, made of silver-plated electrolytic copper (99.9%), are placed. The blades are directly connected to the drive shaft. Contact elements are overdimensioned according to the requirements in order to guarantee, together with a high contact pressure between blades and contacts, a reduced ohmic resistance at the contact surface and a minimum metal wear-off during the life of the grounding switch, with the necessary robustness to withstand thermal and mechanical stresses under short-circuit conditions.

Ambient condition

Altitude: ≤1000m;

Ambient temperature: -25°C~+40°C;

Earthquake intensity: ≤8 degree;

Relative humidity: daily average ≤ 95%, monthly average ≤ 90%

Pollution degree: II

Installation dimension     Unit (mm)

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