Kraus & Naimer KG20B T203/01 E 4-point panel mounted modular emergency rotary switch with V840G bezel and handle, 3x NO, 25A, 690V

Multipurpose main switch, which can be called as safety switch or rotary emergency switch. Main switch can be used in multiple application, such as:

• As main switch for electrical cabinets
• As main switch or emergency stop switch for machinery.

Main switch technical details:

• Max rated operating voltage (U_i):
  • 690V
• Max rated impulse withstand voltage:
  • 6kV
• 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
    • 25A / 690VAC
  • AC-2, Slip-ring motors: starting, switching off
  • AC-3, Squirrel-cage motors: starting, switches off spinning motors
    • 4kW / 220...240VAC
    • 5,5kW / 380...440VAC
    • 5,5kW /500VAC
    • 5,5kW /690VAC
  • 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
    • 25A / 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
    • 20A / 220...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
    • 5,5kW / 220...240VAC
    • 7,5kW / 380...440VAC
    • 7,5kW /500VAC
    • 7,5kW /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
    • 25A (depends on the operating voltage and number of contacts in series)
  • DC-21B, Occasional switching of resistive loads, including moderate overloads
    • 25A (depends on the operating voltage and number of contacts in series)
  • DC-22A, Frequent switching of mixed resistive and inductive loads, including moderate overloads (i.e. shunt motors)
    • 25A (depends on the operating voltage and number of contacts in series)
  • DC-22B, Occasional switching of mixed resistive and inductive loads, including moderate overloads (i.e. shunt motors)
    • 25A(depends on the operating voltage and number of contacts in series)
  • DC-23A, Frequent switching of highly inductive loads (i.e. series motors)
    • 21A (depends on the operating voltage and number of contacts in series)
  • DC-23B, Occasional switching of highly inductive loads (i.e. series motors)
    • 21A (depends on the operating voltage and number of contacts in series)
• Breaking capacity:
  • 180A
• Max compatible lead size:
  • 6mm² (AWG 10) single-core or stranded copper wire
• Operating temperature:
  • -5...50°C (momentary 55°C) 24h in open installation with max nominal current
  • -5...35°C (momentary 40°C) 24h closed installation with max nominal current, such as closed electrical cabinet
  • Bellow -5°C temperature no (mechanical) shock loads are permitted
• Storage temperature:
  • -40...85°C
• IP-rating:
  • IP66
• Installation method:
  • 4-hole panel mounting
• Front plate size:
  • 64x64mm (manufacturers size S2)
• Rotation angle:
  • 90° to the left
• Expandability:
  • For example auxiliary contact block module can be connected into switch
• Contact method of operation:
  • Forcibly guided contacts
    • All contacts must move. If for example one contact pair has welded together, then none of the other contacts will move.
• Number of contacts:
  • 3x NO (normally open)
•  Actuator type:
  • Actuator is lockable into 0-position with 3x padlocks + F-type handle

Downlad Kraus & Naimer Blue Line switchgear catalog 150, switches and optional extras for KG, KH, and KHR series switches

Download Kraus & Naimer Blue Line switchgear catalog 500, main switches and maintenance switches KG and KH series