OS250BS40F

Name: OS250BS40F
Brand: ABB
SKU: OS250BS40F

Short Product Description "The ABB OS250B 4-pole fuse switch disconnector offers reliable electrical protection with a maximum current of 250A. Easy to install and mount on DIN rail, it's perfect for various industrial applications."

Product ModelOS250BS40F

Material Number1SCA022870R8740

Product ID75746

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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Feature1. Reliable Electrical Protection The ABB OS250B provides robust electrical protection, ensuring the safety of your equipment and personnel. Its high-quality design ensures reliable operation under demanding conditions.
2
Feature2. Easy Installation With its snap-to-install design and adjustable mounting feet, the OS250B is easy to integrate into your existing electrical infrastructure. This makes it a convenient choice for both new and existing installations.
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Feature3. Durable Construction Built to withstand harsh industrial environments, the OS250B is constructed with high-grade materials that ensure durability and longevity. Its IP20 rating provides basic protection, and when mounted correctly in an enclosure, it achieves an IP65 rating.
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Feature4. Versatile Mounting Options The OS250B offers both top and side mounting options, providing flexibility in terms of installation. This versatility makes it suitable for a wide range of applications, from panel mounting to DIN rail installation.

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

294 mm

Product Net Height

199 mm

Product Net Depth / Length

154 mm

Product Net Weight

4.7 kg 10.4 lb

Conventional Free-air Thermal Current (Ith)

Î = 40 Â°C 250 A

Feature5. Efficient Operation Designed for efficient operation, the OS250B minimizes power loss while maintaining high performance. Its modular design allows for easy maintenance and replacement of fuses, ensuring minimal downtime and maximum productivity.

Conventional Thermal Current (Ithe)

Fully Enclosed 250 A

Fourth Pole Type

Switched - Fusible Pole

Fuse Size

B1-B3

Fuse System

British Standard

Handle Type

Handle and shaft not included

Mounting Type

Base mounting

Number of Poles

Operating Mode

Side Operated

Pollution Degree

Position of Line Terminals

Top In - Bottom Out Bottom In - Top Out

Power Loss

at Rated Operating Conditions per Pole 13 W

Rated Conditional Short-Circuit Current (Inc)

(690 V) 80 kA

Rated Current (In)

Main Circuit 250 A

Rated Impulse Withstand Voltage (Uimp)

12 kV

Rated Insulation Voltage (Ui)

1000 V

Rated Operational Current AC-21A (Ie)

(500 V) 250 A (690 V) 250 A

Rated Operational Current AC-22A (Ie)

(380 ... 415 V) 250 A (500 V) 250 A (690 V) 250 A

Rated Operational Current AC-23A (Ie)

(380 ... 415 V) 250 A (500 V) 250 A (690 V) 250 A

Rated Operational Power AC-23A (Pe)

(220 ... 240 V) 75 kW (400 V) 140 kW (415 V) 145 kW (500 V) 170 kW (690 V) 250 kW

Rated Operational Voltage

Main Circuit 690 V AC

Rated Short-time Withstand Current Low Voltage (Icw)

for 1 s 8 kiloampere rms

Standards

IEC 60947-3

Switches Operating Mechanism

40 (Right Side)

Terminal Type

Lug terminals

Terminal Width

25 mm

Tightening Torque

30 ... 44 NÂ·m

Tightening Torque

30 ... 44 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

1SCA022870R8740