Main Contacts
Rated thermal current Ith open/enclosed: 20 A
Rated insulation voltage Ui: 690 V
Rated operational current Ie AC21A: 20 A
Making capacity Ieff 3x380-440V: 160 A
Breaking capacity 3x220-240V/3x380-440V/3x660-690V: 160 A / 160 A / 80 A
Disconnection property performed up to: 690 V
Motor switch AC3 3x400V/3x220-240V: 12 A / 3 kW
Direct switching of single motors 3x380-440V/3x660-690V: 5.5 kW / 5.5 kW
Main switch AC23 3x400V: 16 A
Motor switch AC23A 3x220-240V: 4 kW
Main switch AC23B 3x380-440V: 7.5 kW
Safety switch 3x660-690V: 5.5 kW
Rated conditional short-circuit current 400V: 10 kAeff
Max. fuse size gL (gG): 25 A
Mechanical life: 200 x10³
Rated short-time withstand current (1 sec. current): 250A
Temperature Range
Open: -40°C to +90°C
Enclosed: -40°C to +40°C
Storage: -50°C to +90°C
Power Loss per Pole AC21 = Ith
P/pole (PM, SH/LB, DM, PE): 0.322 W / 0.364 W
R/pole (PM, SH/LB, DM, PE): 0.805 mΩ / 0.911 mΩ
Cable Cross Sections
Solid or stranded (mm²/AWG): 0.5 - 10 / 20 - 8 (10)
Flexible (mm²/AWG): 0.5 - 6 / 20 - 10
Flexible (+ multicore cable end) (mm²/AWG): 0.5 - 6 / 20 - 10
Size of Terminal Screw
M3.5
Tightening Torque (Nm): 1.7 - 2.3
Auxiliary Contacts
Rated insulation voltage Ui: 690 V
Rated thermal current Ith, ithe: 10 A
Switching capacity AC15 220-240V/380-440V: 2.5 A / 1.5 A
Rated conditional short-circuit current: 3 kAeff
Max. short circuit protection gL (gG): 10 A
Cable Cross Sections (mm²/AWG): 0.75 - 2.5 / 14 - 12
Flexible (+ multicore cable end) (mm²/AWG): 0.75 - 2.5 (1.5) / 18 - 14
Rated Voltage
600 V
Ampere Rating “General Use”
20 A
DOL Rating
3-phase (110-120V/220-240V/440-480V/550-600V): 1 HP / 3 HP / 7.5 HP / 10 HP
1-phase (110-120V/200-208V/220-240V): 1 HP / 1 HP / 2 HP
Fuse Size (RK5)
5kA / 600V
Manual Motor Controller
40 A
Motor Disconnect
40 A
Tightening Torque
Nm/lb.inch: 1.7 - 2.3 / 11 - 20
