KATKO KUM325U safety switch 63A

KUM 325U is a safety switch that features a polycarbonate housing and provides excellent protection for electrical systems. It is designed to handle up to 25A and 400V, with a rated power of 11kW. This switch offers IP66 protection, making it highly resistant to dust and water ingress, which is ideal for outdoor or harsh environments. It is equipped with a lockable rotary handle for added safety, and the material used is self-extinguishing, which provides additional protection in case of fire. The switch is also durable, with strong resistance to UV radiation and various chemicals​.

Switch technical details:

• Max rated operating voltage (U_i):
  • 690VAC
• Utilization category (Unmarked classes = Manufacturer has not provided information or we just do not have that particular information):
  • AC-1, (I_th, I_u) Non-inductive or slightly inductive loads, example: resistive furnaces, heaters
    • 63A / 690VAC
  • AC-2, Slip-ring motors: starting, switching off
  • AC-3, Squirrel-cage motors: starting, switches off spinning motors
  • AC-4, Squirrel-cage motors: starting, plugging, inching
  • AC-5a, Switching of discharge lamps
  • AC-5b, Switching of incandescent lamps
  • AC-6a, Switching of transformers
  • AC-6b, Switching of capacitor banks
  • AC-7a, Slightly inductive loads in household appliances: examples: mixers, blenders
  • AC-7b, Motor-loads for household appliances: examples: fans, central vacuum
  • AC-8a, Hermetic refrigerant compressor motor control with manual resetting overloads
  • AC-8b, Hermetic refrigerant compressor motor control with automatic resetting overloads
  • AC-12, Control of resistive loads and solid state loads with opto-coupler isolation
  • AC-13, Control of solid state loads with transformer isolation
  • AC-14, Control of small electromagnetic loads (<72VA)
  • AC-15, Control of electromagnetic loads (>72VA)
  • AC-20, Connecting and disconnecting under no-load conditions
  • AC-21A, (I_e) Frequent switching of resistive loads, including moderate overloads
    • 63A / 400...690VAC
  • AC-21B, (I_e) Occasional switching of resistive loads, including moderate overloads
  • AC-22A, Frequent switching of mixed resistive and inductive loads, including moderate overloads
    • 40A / 400...690VAC
  • AC-22B, Occasional switching of mixed resistive and inductive loads, including moderate overloads
  • AC-23A, Frequent switching of motor loads or other highly inductive loads
    • 25A / 400...690VAC
    • 11kW / 400VAC
    • 22kW / 690VAC
  • AC-23B, Occasional switching of motor loads or other highly inductive loads
  • DC-1, Non Inductive or slightly inductive loads, resistance furnaces, heaters
  • DC-3, Shunt-motors, starting, plugging(1), inching(2), dynamic braking of motors
  • DC-5, Series-motors, starting, plugging(1), inching(2), dynamic braking of motors
  • DC-6, Switching of incandescent lamps
  • DC-12, Control of resistive loads and solid state loads with opto-coupler isolation
  • DC-13, Control of electromagnetics
  • DC-14, Control of electromagnetic loads when having variable resistors in the circuit
  • DC-20A, Frequent connecting and disconnecting under no-load conditions
  • DC-20B, Occasional connecting and disconnecting under no-load conditions
  • DC-21A, Frequent switching of resistive loads, including moderate overloads
  • DC-21B, Occasional switching of resistive loads, including moderate overloads
  • DC-22A, Frequent switching of mixed resistive and inductive loads, including moderate overloads (i.e. shunt motors)
  • DC-22B, Occasional switching of mixed resistive and inductive loads, including moderate overloads (i.e. shunt motors)
  • DC-23A, Frequent switching of highly inductive loads (i.e. series motors)
  • DC-23B, Occasional switching of highly inductive loads (i.e. series motors)
• Installation method:
  • 2x 5mm through-hole wall mounting.
• Cable feed-through:
  • 2x M25
• IP-rating:
  • IP66