SIRCO M UL 508
Non-fusible disconnect switches standards UL and CSA
from 16 to 100 A
Characteristics according to UL 508 / CSA22.2#14 suitable as motor disconnect
Characteristics
General use rating (A) 16 A 20 A 25 A 32 A 40 A 63 A 80 A 100 A CD
Short circuit rating at 600 VAC (kA) 65 65 65 65 10 / 65 50 / 65 50 / 65 50/65
Type of fuse J J J J J J J J
Max fuse rating (A) 30 30 30 30 60 / 30 100 / 60 100 / 60 100/60
Max. motor hp / FLA 3 ph motor max.
208 VAC 3 / 0.6 5 / 16.7 7.5 / 24.2 7.5 / 24.2 7.5 / 24.2 15 / 46.2 15 / 46.2 15/46.2
220-240 VAC 5 / 15.2 5 / 15.2 7.5 / 22 7.5 / 22 7.5 / 22 20 / 54 20 / 54 20/54
440-480 VAC 10 / 14 10 / 14 15 / 21 20 / 27 20 / 27 40 / 52 40 / 52 40/52
600 VAC 10 / 11 15 / 17 20 / 22 25 / 27 25 / 27 40 / 41 40 / 41 40/41
Connection terminals
Solid - 1 wire #14 - #10 #14 - #10 #14 - #10 #14 - #10 #14 - #10 #14 - #10 #14 - #10 #14 - #10
Solid - 2 wires 2 x #12 2 x #12 2 x #12 2 x #12 2 x #12 2 x #12 2x #12 2x #12
Stranded - 1 wire #14 - #4 #14 - #4 #14 - #4 #14 - #4 #14 - #4 #14 - #1 #14 - #1 #14 - #1
Stranded - 2 wires 2 x (#14 - #12) 2 x (#14 - #12) 2 x (#14 - #12) 2 x (#14 - #12) 2 x (#14 - #12) 2 x (#10 - #6) 2 x (#10 - #6) 2 x (#10 - #6)
Auxiliary contacts
Electrical characteristics A300 A300 A300 A300 A300 A300 A300 A300
Mechanical characteristics
Endurance (number of operating cycles) 10 000 10 000 10 000 10 000 10 000 10 000 10 000 10000
Operating torque (lbs.in / Nm) 7 / 0.8 7 / 0.8 7 / 0.8 7 / 0.8 7 / 0.8 8.9 / 1 8.9 / 1 8.9/1
Thermal current Ith (40°C) 16 A 20 A 25 A 32 A 40 A 63 A 80 A 100 A CD
Rated insulation voltage U
i
(V) 800 800 800 800 800 800 800 800
Rated impulse withstand voltage U
imp
(kV) 8 8 8 8 8 8 8 8
Rated operational currents Ie (A)
Rated voltage Utilization A / B
(1)
A / B
(1)
A / B
(1)
A / B
(1)
A / B
(1)
A / B
(1)
A / B
(1)
A / B
(1)
415 VAC AC-23 A / AC-23 B 16 / 16 20 / 20 25 / 25 32 / 32 40 / 40 63 / 63 80 / 80 80/80
500 VAC AC-22 A / AC-22 B 16 / 16 20 / 20 25 / 25 32 / 32 40 / 40 63 / 63 80 / 80 -
500 VAC AC-23 A / AC-23 B 16 / 16 20 / 20 25 / 25 25 / 25 25 / 25 63 / 63 63 / 63
690 VAC AC-21 A / AC-21 B 16 / 16 20 / 20 25 / 25 32 / 32 40 / 40 63 / 63 80 / 80 100/100
690 VAC AC-22 A / AC-22 B 16 / 16 20 / 20 25 / 25 32 / 32 32 / 40 40 / 63 63 / 80 -
690 VAC AC-23 A / AC-23 B 16 / 16 20 / 20 25 / 25 25 / 25 25 / 25 40 / 40 40 / 40 -
Operational power in AC-23 (kW)
At 400 VAC without prebreaking AC in AC-23 (kW)
(1)(2)
7.5 9 11 15 18.5 30 37 -
At 500 VAC without prebreaking AC in AC-23 (kW)
(1)(2)
7.5 9 11 15 15 30 37 -
At 690 VAC without prebreaking AC in AC-23 (kW)
(1)(2)
7.5 11 15 18.5 18.5 30 37 -
Fuse protected short-circuit withstand (kA rms prospective)
Prospective short-circuit current (kA rms)
(3)
50 50 50 50 50 50 50 25
Associated fuse rating (A)
(3)
16 20 25 32 40 63 80 100
Overload capacity (Ue 415 VAC)
Rated short-time withstand current 0.3 s. ICW (kA rms)
(3)
2.5 2.5 2.5 2.5 2.5 3 3 1.5
Rated short-circuit making capacity I
cm
(kA peak)
(3)
6 6 6 6 6 9 9 2.1
Connection
Minimum Cu cable cross section (mm²) 1.5 1.5 1.5 1.5 1.5 2.5 2.5 2.5
Maximum Cu cable section (mm
2
) 16 16 16 16 16 35 35 35
Tightening torque min / max (Nm) 2 / 2.2 2 / 2.2 2 / 2.2 2 / 2.2 2 / 2.2 3.5 / 3.85 3.5 / 3.85 3.5/3.85
(1) A / B: Category with index A = frequent operation - Category with index B = infrequent operation.
(2) The power value is given for information only, the current values vary from one manufacturer to another.
(3) For a rated operating voltage U
e
= 400 VAC.
Characteristics according to IEC 60947-3