OS1250DA04FP

Name: OS1250DA04FP
Brand: ABB
SKU: OS1250DA04FP

The ABB OS1250DA04FP switch fuse is a high-performance solution designed for demanding applications. It features rapid fault clearance and maintains protection levels, ensuring reliability and efficiency. Ideal for various installations, this switch fuse is compact and lightweight, saving installation time and space.

Product ModelOS1250DA04FP

Material Number1SCA105240R1001

Product ID75483

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. High Protection and ReliabilityThe ABB OS1250DA04FP switch fuse is engineered to provide high protection and reliability. Its contact design enables rapid fault clearance, ensuring the protection level is maintained even after a fault occurs.
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2. Compact and Lightweight DesignThis switch fuse is compact and lightweight, allowing for easy installation in smaller enclosures. Its modular structure saves installation time and space, making it a cost-effective solution.
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3. Modular InstallationThe OS1250DA04FP features a modular design that allows for flexible installation. The mechanism and poles can be placed according to specific installation requirements, making it versatile for various applications.
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4. Technical SpecificationsWith a rated insulation voltage of 1000 V and a pollution degree of 3, this switch fuse meets stringent technical standards. It also features a dielectric strength of 10 kV and a rated impulse withstand voltage of 12 kV.

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

539 mm

Product Net Height

356 mm

Product Net Depth / Length

366 mm

Product Net Weight

35.96 kg 79.28 lb

Conventional Free-air Thermal Current (Ith)

Î = 40 Â°C 1250 A

5. Versatile ApplicationsThe ABB OS1250DA04FP switch fuse is designed for a wide range of applications, including those requiring high operational currents. It supports AC-21A and AC-22A ratings up to 500 V and 690 V, respectively, making it suitable for various electrical systems.

Conventional Thermal Current (Ithe)

Fully Enclosed 1000 A

Fourth Pole Type

Switched - Fusible Pole

Fuse Size

NH4a

Fuse System

DIN

Handle Type

Pistol handle and shaft 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 1250 A

Rated Impulse Withstand Voltage (Uimp)

12 kV

Rated Insulation Voltage (Ui)

1000 V

Rated Operational Current AC-21A (Ie)

(380 ... 415 V) 1250 A (500 V) 1250 A (690 V) 1250 A

Rated Operational Current AC-21B (Ie)

(500 V) 1250 A (690 V) 1250 A

Rated Operational Current AC-22A (Ie)

(380 ... 415 V) 1250 A

Rated Operational Current AC-22B (Ie)

(500 V) 1250 A (690 V) 1250 A

Rated Operational Current AC-23A (Ie)

(380 ... 415 V) 1000 A

Rated Operational Current AC-23B (Ie)

(500 V) 1000 A (690 V) 1000 A

Rated Operational Power AC-23A (Pe)

(220 ... 240 V) 315 kW (400 V) 560 kW (415 V) 560 kW (500 V) 710 kW (690 V) 1000 kW

Rated Operational Voltage

Main Circuit 690 V AC

Rated Short-time Withstand Current Low Voltage (Icw)

for 1 s 40 kiloampere rms

Standards

IEC 60947-3

Switches Operating Mechanism

04 (Left Side)

Terminal Type

Lug terminals

Terminal Width

50 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

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

E-Number (Finland)

3661010

Manufacturer ID

1SCA105240R1001