KYN61‑40.5 Indoor Draw‑out Armored AC Metal‑Enclosed High‑Voltage Switchgear | 35kV
The KYN61‑40.5(Z) armored removable AC metal‑enclosed switchgear is indoor high‑voltage switch cabinet, suitable for three‑phase AC 50Hz power systems with rated voltage up to 40.5kV.
It receives and distributes electric energy for power plants, substations, mining enterprises, heavy‑industry workshops and renewable‑energy stations. It also performs circuit control, fault protection and real‑time monitoring.
Our KYN61‑40.5 cabinet is manufactured strictly according to GB 3906, GB/T 11022 and IEC 60298 standards. Custom‑tailored cabinet dimensions and internal component layouts are supported to match your engineering requirements.

K‑Armored Metal‑clad Cabinet
Y‑Removable / Draw‑out Type
N‑Indoor Installation
61‑Design Serial Number
40.5‑Rated Voltage (kV)
- Ambient air temperature: Max 40℃, Min -10℃
- Altitude: ≤ 1000 m above sea‑level
- Relative humidity: Daily average ≤ 95%, Monthly average ≤ 90%
- Not suitable for locations with corrosive gas, heavy dust, flammable gas or violent vibration
- Earthquake intensity: ≤ Grade 8
This switch cabinet follows GB3906‑2006 and IEC298 design standards. The whole equipment consists of fixed cabinet body and removable handcart unit.
The interior is separated into circuit‑breaker compartment, main‑busbar compartment, cable compartment and relay instrument compartment by metal partitions. The protection rating for each compartment reaches IP2X and cabinet shell IP4X.
Different types of handcart are optional: circuit‑breaker handcart, voltage‑transformer handcart, measuring‑instrument handcart & earthing handcart. All handcarts have good interchangeability. Locking devices are equipped for test & working positions to prevent unintended movement.
| Item | Unit | Parameter |
|---|---|---|
| Rated Voltage | kV | 40.5 |
| Rated Lightning‑impulse Withstand Voltage(peak) | kV | 185 |
| Rated Power‑frequency Withstand Voltage(1min) | kV | 95 |
| Rated Frequency | Hz | 50 |
| Rated Current | A | 630; 1250; 1600; 2000 |
| Rated Short‑circuit Breaking Time | kV | 20, 25, 31.5 |
| Rated Short‑circuit Making Current(peak) | kA | 50, 63, 80 |
| Rated Short‑time Withstand Current(1s)(rms) | kA | 50, 63, 80 |
| 4s Thermal‑stability Current (rms) | kA | 20, 25, 31.5 |
| Cabinet Protection Degree | IP4X | |
| Overall Dimension(W × D × H) for Vacuum‑breaker Cabinet | mm | 1400 × 2800 × 2600 |