OS800D21

Name: OS800D21
Brand: ABB
SKU: OS800D21

The ABB OS800D21 switch fuse provides high protection and reliability, ensuring rapid fault clearance and maintaining protection levels. Compact design for efficient installation, ideal for various applications.

Product ModelOS800D21

Material Number1SCA022834R6490

Product ID75764

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. High Protection and Reliability DescriptionThe ABB OS800D21 switch fuse is designed to provide high protection and reliability, ensuring rapid fault clearance and maintaining protection levels even after faults occur. This ensures continuous operation and minimizes downtime.
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2. Compact Design DescriptionThe OS800D21 features a compact design, allowing for efficient installation in smaller enclosures. This saves space and reduces installation time, making it ideal for a variety of applications.
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3. Rapid Fault Clearance DescriptionWith its advanced contact design, the OS800D21 switch fuse enables rapid fault clearance. This ensures quick response to faults, reducing the risk of further damage and promoting safe operation.
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4. Adjustable Installation DescriptionThe adjustable shaft of the OS800D21 allows for a range of installation depths, making it versatile for different installation requirements. This flexibility ensures that the switch fuse can be integrated seamlessly into various systems.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Pollution Degree

Product Net Width

341 mm

Product Net Height

306 mm

Product Net Depth / Length

233 mm

Product Net Weight

14.39 kg 31.72 lb

Conventional Free-air Thermal Current (Ith)

Î = 40 Â°C 800 A

5. Cost-Effective Solution DescriptionThe lightweight structure of the OS800D21 switch fuse saves money by reducing installation time and costs. Its compact size also means less material is required, making it a cost-effective solution for your electrical needs.

Conventional Thermal Current (Ithe)

Fully Enclosed 720 A

Fuse System

DIN

Handle Type

Handle and shaft not included

Mounting Type

Base mounting

Number of Poles

Operating Mode

Front Operated

Pollution Degree

Position of Line Terminals

Top In - Bottom Out, Bottom In - Top Out

Power Loss

at Rated Operating Conditions per Pole 75 W

Rated Conditional Short-Circuit Current (Inc)

(690 V) 80 kA

Rated Current (In)

Main Circuit 800 A

Rated Impulse Withstand Voltage (Uimp)

12 kV

Rated Insulation Voltage (Ui)

1000 V

Rated Operational Current AC-21A (Ie)

(500 V) 800 A (690 V) 800 A

Rated Operational Current AC-22A (Ie)

(380 ... 415 V) 800 A (500 V) 800 A (690 V) 800 A

Rated Operational Current AC-23A (Ie)

(380 ... 415 V) 800 A (500 V) 800 A (690 V) 800 A

Rated Operational Power AC-23A (Pe)

(220 ... 240 V) 250 kW (400 V) 450 kW (415 V) 450 kW (500 V) 560 kW (690 V) 710 kW

Rated Operational Voltage

Main Circuit 690 V AC

Rated Short-time Withstand Current Low Voltage (Icw)

for 1 s 18 kiloampere rms

Standards

IEC 60947-3

Switches Operating Mechanism

21 (Between the Poles)

Terminal Type

Lug terminals

Terminal Width

39 mm

Tightening Torque

50 ... 75 NÂ·m

Tightening Torque

50 ... 75 NÂ·m

Object Classification Code

ETIM 8

EC001040 - Fuse switch disconnector

ETIM 9

EC001040 - Fuse switch disconnector

UNSPSC

39122233

IDEA Granular Category Code (IGCC)

5291 >> Fuse switch disconnector

eClass

V11.1 : 27371401

WEEE Category

5. Small Equipment (No External Dimension More Than 50 cm)

Manufacturer ID

1SCA022834R6490