OT400DUUR3AZ-L21

Name: OT400DUUR3AZ-L21
Brand: ABB
SKU: OT400DUUR3AZ-L21

ABB OT400DUUR3AZ-L21: A reliable, 3-pole, 400 A disconnect switch with 350 hp capacity, ideal for motor disconnects and industrial control panels. Features modular construction and superior short circuit protection.

Product ModelOT400DUUR3AZ-L21

Material Number1SCA156608R1001

Product ID82503

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

1
Feature1. Reliability and Safety The ABB OT400DUUR3AZ-L21 is engineered with safety in mind, featuring a dead front construction and terminal shrouds to reduce the risk of touching live parts, ensuring a safer installation.\",\"2. Versatile Application This disconnect switch is equally suitable for both top and bottom incoming power feeds, providing flexibility in your installation setup.\",\"3. Modular Construction The modular design of the OT400DUUR3AZ-L21 allows for easy maintenance and upgrades, ensuring your system remains efficient and reliable over time.\",\"4. Superior Short Circuit Protection With a short circuit current rating of 65 kA, this switch provides excellent protection against electrical surges, ensuring your equipment and personnel are safe.\",\"5. Easy Operation and Locking Mechanism The handle and shaft of the OT400DUUR3AZ-L21 are designed with a door interlock, preventing the door from being opened when the switch is in the on position. Additionally, handles can be padlocked in the \"OFF\" position with up to three padlocks, providing an additional layer of safety and security.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Degree of Protection

acc. to IEC 60529 IP65

Pollution Degree

Product Net Width

400 mm

Product Net Height

800 mm

Product Net Depth / Length

230 mm

Product Net Weight

29.85 kg

Cable Entry Position

Cable Outlets Per Side

Blank / 4xring-flange, Knock-outs: 3x10mm, 12.5mm, 20.5mm, 25.5mm, 32.5mm

Connecting Capacity Main Circuit

Hole Diameter 10 mm Screw Clamp / PE Terminal 4pc,25 ... 120 mmÂ²

Conventional Thermal Current (Ithe)

Fully Enclosed 400 A

Degree of Protection

acc. to IEC 60529 IP65

Enclosure Material

Steel sheet

Enclosure Type

MSC

Handle Color

Red / Yellow

Handle Type

Pistol handle

Impact Resistance Rating

Housing IK09

Maximum Mounted Auxiliary Contacts

2 NO, 2 NC

Mechanical Durability

16000

Mounted Auxiliary Contacts

2 NO, 1 NC

Neutral Type

No neutral terminal

Number of Auxiliary Contacts NC

Number of Auxiliary Contacts NO

Number of Poles

Pollution Degree

Position of Line Terminals

Bottom In - Bottom Out

Power Loss

at Rated Operating Conditions per Pole 10 W

Rated Conditional Short-Circuit Current (Inc)

61.5 kA

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) 355 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

Standards

IEC 60947-1, -3

Terminal Type

Bolt

Tightening Torque

acc. IEC 60947-1 44 NÂ·m

Tightening Torque

acc. IEC 60947-1 44 NÂ·m

Object Classification Code

ETIM 8

EC000216 - Switch disconnector

WEEE Category

4. Large Equipment (Any External Dimension More Than 50 cm)

Manufacturer ID

1SCA156608R1001