OT400U21

Product ID:88836
Updated: 2026/7/15
ABB OT400U21

Key Features

  • 1Enhance safety with a fully enclosed, durable design.
  • 2Handle 400 A current at 12 kV with 1000 V impulse withstand.
  • 3Meet IEC/EN 60664-1 standards for insulation and operation.
  • 4Withstand high short-circuit currents up to 65 kA at 690 V.
  • 5Ensure secure global operation with UL and CSA compatibility.

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Technical Specifications

Detailed engineering parameters

ParameterValueParameterValue
Degree of Protection
Front IP00
Environmental Information
1SCC301266D0201
Pollution Degree
3
Product Net Width
226 mm
Product Net Height
220 mm
Product Net Depth / Length
105 mm
Product Net Weight
3 kg 6.7 lb
Conventional Thermal Current (Ithe)
Fully Enclosed 400 A
Degree of Protection
Front IP00
Distance Between Phases
Standard
Handle Type
Handle and shaft not included
Lock Type
No
Mechanical Durability
16000
Mounting Type
Base mounting
Number of Poles
3P
Operating Mode
Front operated
Pollution Degree
3
Power Loss
at Rated Operating Conditions per Pole 10 W
Rated Impulse Withstand Voltage (Uimp)
12 kV
Rated Insulation Voltage (Ui)
acc. to IEC/EN 60664-1 1000 V
Rated Operational Current AC-22A (Ie)
(380 ... 415 V) 400 A (500 V) 400 A (690 V) 400 A
Rated Operational Current AC-23A (Ie)
(380 ... 415 V) 400 A (500 V) 400 A (690 V) 400 A
Rated Operational Power AC-23A (Pe)
(380 ... 415 V) 220 kW (500 V) 280 kW (690 V) 400 kW
Rated Operational Voltage
Main Circuit 1000 V
Rated Short-Circuit Making Capacity (Icm)
(690 V) 65 kA
Rated Short-time Withstand Current Low Voltage (Icw)
for 1 s 15 kA
Special Functions
No
Standards
IEC 60947-3 / UL 98 / CSA C22.2 NO.4
Switches Operating Mechanism
Mechanism Between the Poles 21 (Between the Poles)
Terminal Type
Lug terminals
Tightening Torque
acc. IEC 60947-1 42.4 N·m
Maximum Operating Voltage UL/CSA
600 V
Ampere Rating
400 A
Horsepower Rating UL/CSA
(acc. to UL 200 V) 100 Hp (acc. to UL 208 V) 100 Hp (acc. to UL 240 V) 125 Hp (acc. to UL 480 V) 250 Hp (acc. to UL 600 V) 350 Hp
Tightening Torque
acc. IEC 60947-1 42.4 N·m
Object Classification Code
Q
ETIM 8
EC000216 - Switch disconnector
ETIM 9
EC000216 - Switch disconnector (low voltage)
UNSPSC
39122233
IDEA Granular Category Code (IGCC)
5290 >> Disconnect switch
eClass
V11.1 : 27371403
WEEE Category
5. Small Equipment (No External Dimension More Than 50 cm)
Manufacturer ID
1SCA022762R6300

Specifications may be subject to change without notice

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