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ABBFuse protector
Product Model

OS1250D04FK

Manufacturer

ABB

Category

Fuse protector

Product ID

75232

In Stock
Last updated: 2025/4/18
View Specifications
ABB OS1250D04FK

Selling Points

  • 1High Protection and Reliability: Ensures rapid fault clearance and maintains protection level even after a fault occurs.
  • 2Modular Design: Easy installation and maintenance with adjustable shaft for various installation depths.
  • 3Compact and Lightweight: Saves money and installation space with a compact design, reducing installation time.
  • 4Self-Cleaning Contacts: Provides long, reliable electrical life with self-cleaning and maintenance-free contacts.
  • 5Safety Features: Interlocking fuse covers prevent opening while the switch is in the “ON” position, ensuring safety for personnel.
Product Details
OS1250D04FK
ABB

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

ParameterValueParameterValue
Pollution Degree
3
Product Net Width
539 mm
Product Net Height
356 mm
Product Net Depth / Length
294 mm
Product Net Weight
36.495 kg 80.46 lb
Cable Cross-Section
2.5 ... 25 mm²
Conventional Free-air Thermal Current (Ith)
Θ = 40 °C 1250 A
Conventional Thermal Current (Ithe)
Fully Enclosed 1000 A
Fourth Pole Type
Switched - Fusible Pole
Fuse Size
NH4
Fuse System
DIN
Handle Type
Direct mounted handle
Mounting Type
Base mounting
Number of Poles
4
Operating Mode
Front Operated
Pollution Degree
3
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 N·m
Tightening Torque
50 ... 75 N·m
Object Classification Code
Q
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)
Manufacturer ID
1SCA113109R1001

Specifications may be subject to change without notice