YCH9-125

YCH9-125

Model Identification

Specification Details
Series YCH9-125 (With Lock)
Product Type DIN Rail Isolating Switch (Load Disconnect)
Standard Compliance IEC/EN 60947-3
Mounting DIN Rail

Electrical Ratings

Parameter Specification
Rated Current (Ie) Up to 125 A
Rated Voltage (Ue) 230 V AC (1P), 400 V AC (2P/3P/4P)
Rated Frequency 50 / 60 Hz
Poles Available 1, 2, 3, 4
Rated Impulse Withstand Voltage (Uimp) 4 kV
Rated Short-time Withstand Current (Icw) 12 Ie for 1 s
Rated Making & Breaking Capacity 3 Ie @ 1.05 Ue, cosφ = 0.65
Rated Short-Circuit Making Capacity 20 Ie @ t = 0.1 s
Dielectric Test Voltage (1 min) 2.5 kV
Insulation Voltage (Ui) 500 V
Use Category AC-22A
Protection Degree IP20

Mechanical & Environmental

Parameter Specification
Electrical Life (operations) 1 500
Mechanical Life (operations) 8 500
Ambient Temp. (with daily avg ≤ 35 °C) −5 °C … +40 °C
Installation & Wiring Clamp screw connection; torque ~2.5 N·m
Terminal Cable Range ~50 mm²

Safety / Lock Feature

Feature Description
Safety Lock Handle cannot close after rotation beyond isolation position, enabling maintenance lock-out
Contact Position Indicator Red = Closed; Green = Open

Typical Pole / Rating Table

Poles Rated Voltage Rated Current
1P 230 V AC ≤125 A
2P 400 V AC ≤125 A
3P 400 V AC ≤125 A
4P 400 V AC ≤125 A

Typical Applications

  • Safe power isolation for maintenance

  • Load disconnection in industrial and commercial circuits

  • Switches with lock-out capability for safety procedures

  • Distribution panels requiring positive isolation

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