OS1250DA03N3P

Name: OS1250DA03N3P
Brand: ABB
SKU: OS1250DA03N3P

`ABB OS1250DA03N3P switch fuse offers high protection and reliability. Rapid fault clearance, adjustable installation depth, and compact design make it ideal for various electrical applications. Suitable for 690V, 400/500/690V power ratings.`

Product ModelOS1250DA03N3P

Material Number1SCA107934R1001

Product ID75923

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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Feature1. High Protection and Reliability The ABB OS1250DA03N3P switch fuse is designed to provide high protection and reliability, ensuring continuous operation even in fault conditions. Its contact design enables rapid fault clearance, maintaining the protection level and minimizing downtime.
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Feature2. Rapid Fault Clearance Equipped with a contact design that facilitates rapid fault clearance, this switch fuse ensures quick restoration of normal operation. This feature is crucial for maintaining system integrity and reducing maintenance time.
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Feature3. Adjustable Installation Depth The shaft of the OS1250DA03N3P is adjustable, allowing for a range of installation depths. This flexibility makes it suitable for various panel designs and installation requirements, saving space and installation time.
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Feature4. Compact Design The OS1250DA03N3P switch fuse is compact, making it ideal for installation in smaller enclosures. Its lightweight structure reduces installation time and costs, making it a cost-effective solution for electrical applications.

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

429 mm

Product Net Height

356 mm

Product Net Depth / Length

366 mm

Product Net Weight

46 kg

Conventional Free-air Thermal Current (Ith)

Î = 40 Â°C 1250 A

Feature5. Detachable Neutral Link The OS1250DA03N3P includes a detachable neutral link integrated into the mechanism, providing flexibility in neutral connections. This feature enhances the overall reliability and ease of use of the switch fuse.

Conventional Thermal Current (Ithe)

Fully Enclosed 1000 A

Fourth Pole Type

Detachable Neutral Link Integrated Into the Mechanism

Fuse Size

NH4a

Fuse System

DIN

Handle Type

Handle and shaft included

Mounting Type

Base mounting

Number of Poles

3+N

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

Special Functions

Detachable Neutral

Standards

IEC 60947-3

Switches Operating Mechanism

03 (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

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

E-Number (Finland)

3661008

Manufacturer ID

1SCA107934R1001