Page 95 - Changeover switch

ABB TRANSFER AND CHANGE-OVER SWITCHES 95

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Technical data

Compact automatic transfer switches OTM40...125_

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Compact automatic transfer switches
Switch size
Data according to IEC 60947-3 OTM40_ OTM63_ OTM125_
Rated insulation voltage and rated Pollution
operational voltage AC20/DC20 degree 3 V 750 750 750
Dielectric strength 50 Hz 1min. kV 6 6 6
Rated impulse withstand voltage kV 8 8 8
Rated thermal current and rated / ambient 40°C In open air A 40 63 125 04
operational current AC20/DC20
/ ambient 40°C In enclosure A 40 63 125
/ ambient 60°C In enclosure A 32 50 100
..with minimum conductor cross section Cu mm 2 10 16 50
Rated operational current, AC-21A up to 500 V A 40 63 125
690 V A 40 63 125
Rated operational current, AC-22A up to 500 V A 40 63 125
690 V A 40 63 125
Rated operational current, AC-23A up to 415 V A 40 63 90
500 V A 40 60 70
690 V A 40 40 50
Rated operational current / poles in series, DC-21A up to 48 V A 40/1 63/1 125/1
110 V A 40/2 63/2 125/2
220 V A 40/4 63/4 125/4
Rated operational current / poles in series, DC-22A up to 48 V A 40/1 63/1 125/1
110 V A 40/2 63/2 125/2
220 V A 40/4 63/4 80/4
Rated operational current / poles in series, DC-23A up to 48 V A 40/1 63/1 125/1
110 V A 40/2 63/2 125/2
220 V A 40/4 63/4 63/4
Rated operational power, AC-23A 1) 230 V kW 7.5 15 22
The kW-ratings are accurate for 3-phase 400 V kW 18.5 30 45
1500 R.P.M. standard asychronous motors
415 V kW 18.5 30 45
500 V kW 22 37 45
690 V kW 37 37 45
Rated breaking capacity in category AC-23 up to 415 V A 320 504 720
500 V A 320 480 560
690 V A 320 320 400
Rated conditional short-circuit current I p Ip (r.m.s.) 50 kA, 415 V îc (peak) kA 16.5 16.5 16.5
(r.m.s.) and corresponding max. allowed
cut-off current î c (peak) value. Max. OFA_ fuse size gG/aM A/A 125/125 125/125 125/125
Ip (r.m.s.) 18 kA, 690 V îc (peak) kA 11 11 11
The cut-off current î c refers to values Max. OFA_ fuse size gG A 125 125 125
listed by fuse manufacturers (single
phase test acc. to IEC60269). Ip (r.m.s.) 50 kA, 690 V îc (peak) kA 10 10 10
Max. OFA_ fuse size gG/aM A/A 63/63 63/63 63/63
Rated short-time withstand current Icw (r.m.s.) 690 V 1s kA 2.5 2.5 2.5
Rated short-time making capacity2) Icm (peak) 690 V kA 3.6 3.6 3.6
Power loss / pole With rated current W 1.6 2.8 6.3
Mechanical endurance Number of oper. cycles 3) Cycles 10 000 10 000 10 000
Cable size Cu-wire size suitable for mm 2 10-70 10-70 10-70
terminal clamps
AWG 8-00 8-00 8-00
Terminal tightening torque Counter torque required Nm 6 6 6
Typical for 3-pole
Operating torque switches Nm 5 5 5
Weight without accessories 3-pole switch kg 1.75 1.75 1.75
4-pole switch kg 2.00 2.00 2.00