ABB OT Non-fusible Disconnect Switches Data Sheet
OT51GB 16-07 1SCC301023K0201
Protection and Connection
OT Non-fusible Disconnect Switches
1600...2000 Amperes
Reliable in extreme
conditions
Suitable for heavy duty applications
at full rated current
OT disconnect switches have a short
circuit rating of 100kA at 600V and
the full general use current ratings at
600Vac and 250Vdc.
Excellent insulation
Reduced risk of arcing between phases
in even the most severe circumstances
and environments.
Space saving Easy to install
Modular design
Flexibility in design allows for space
saving configurations.
Flexible installation
Mounting is possible in any orientation:
horizontal, vertical or even on the
ceiling.
Reduced installation time
For external handles, the shaft is
adjustable at different installation
depths. Key hole mounting feet and
snap-on mounting of auxiliary contacts
make installation easy and fast.
Technical data
Non-fusible disconnect switches OT1600...2000U
Technical data according to UL98/CSA 22.2 No. 4, cULus Listed Open type switch, File E101914
Switch size OT16 00U OT2000U
General Use AC ratings -40 to +40°C
Voltage rating
Maximum General Use DC Ratings 250Vdc 160 0 2000
Short circuit raiting with fuse
Minimum electrical endurance pf. 0.75...0.8
Mechanical endurance Divide by two for operation cycles
Gross/ net weight without handle, shaft and
accessories
pf=0.7...0.8 Single and three phase A
Fuse type L
2-pole switch
3-pole switch
4-pole switch
V
kA
A
Oper.cycles
Op er.
kg - lb
kg - lb
kg -lb
160 0
600
100
2000
500
2500
37/34 - 81.6/75
52/49 - 114.6/108
69/65 - 152.1/143.3
2000
600
100
2000
500
2500
37/34 - 81.6/75
52/49 - 114.6/108
69/65 - 152.1/143.3
Standard shaft and mounting depth
Standard handle
Terminal bolt size
Terminal bolt tightening torque
Optional terminal lug kits (kit includes 6 lugs) Qty/ switch x type
Torque Wire tightening
Operating torque Typical for 2, 3 and 4-pole switches Nm / lb.in 75 / 663 75 / 663
Minimum enclosure
dimensions
Square dimension x lenght of shaft
Corresponding mounting depth
Metric thread diameter x lenght
Counter torque required
Lug mounting
Height x Width x Depth mm
mm / in
mm / in
Type
mm
Nm / lb.in
Wire range
Nm / lb.in
Nm / lb.in
in
12x185 / 0.47x7.3
358-4 44 / 13.6-16.8
OH B 274 J 12
M12x60 (included)
50 / 443
2x OZX A-120 0
2x 4x2-600MCM
56 / 500
50 / 443
1000x800x450
39.4 x3 1. 5x 17. 7
12x185 / 0.47x7.3
358-444 / 13.6-16.8
OH B 274J12
M12x60 (included)
50 / 443
2x OZX A-120 0
2x 4x2-600MCM
56 / 500
50 / 443
1000x800x450
39.4 x3 1. 5x 17. 7
Type designation key
Explanation of the types
OT 2000 U 03 P
1 2 3 4 5
1 Brand
OT: ABB non-fusible disconnect switch brand
2 Switch size / Ampere rating
160 0: 16 00 A
2000: 2000 A
3 Mounting / Construction/ Standard
U: Front operated, base mounting, UL /CSA
4 Number of poles and placing of the operating mechanism
03: 3-poles, operating mechanism at the left end of the switch
1 Disconnect switches | OT1600...2000
04: 4-poles, operating mechanism at the left end of the switch
12: 3-poles, operating mechanism between the poles
22: 4-poles, operating mechanism between the poles
5 Included handle and shaft
Blank_ No accessories included
P: External handle and shaft
K: Direct mount handle
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