INDCTL Logo
ABBFuse protector
Product Model

OS250B04N1

Manufacturer

ABB

Category

Fuse protector

Product ID

74755

In Stock
Last updated: 2025/4/19
View Specifications
ABB OS250B04N1

Selling Points

  • 1The OS250B04N1 switch fuse delivers exceptional reliability and performance in demanding applications.
  • 2Optimally designed for motor protection, ensuring rapid fault clearance and maintaining protection levels.
  • 3Modular design with adjustable shaft and snap-on auxiliary contacts for cost-efficient and time-saving installation.
  • 4Interlocking fuse covers prevent opening while the switch is in the "ON" position, ensuring personnel safety.
  • 5Available in various ampere ratings (20...1250 A) and suitable for different voltage configurations (230 V, 400 V, etc.).
Product Details
OS250B04N1
ABB

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

ParameterValueParameterValue
Product Net Width
154 mm
Product Net Height
262 mm
Product Net Depth / Length
193 mm
Product Net Weight
4.7 kg
Fuse Size
B1-B3
Fuse System
British Standard
Mounting Type
Base mounting
Number of Poles
4
Operating Mode
Front Operated
Power Loss
at Rated Operating Conditions per Pole 13 W
Rated Conditional Short-Circuit Current (Inc)
(690 V AC) 80 kA
Rated Current (In)
Main Circuit 250 A
Rated Impulse Withstand Voltage (Uimp)
Main Circuit 12 kV
Rated Operational Current AC-21A (Ie)
(380 ... 415 V) 250 A (500 V AC) 250 A (690 V AC) 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 Voltage
Main Circuit 690 V AC
Rated Short-time Withstand Current Low Voltage (Icw)
for 1 s 8 kA
Standards
IEC 60947-3
Terminal Type
Lug terminals
Tightening Torque
30 … 44 N·m
Tightening Torque
30 … 44 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
5. Small Equipment (No External Dimension More Than 50 cm)
Manufacturer ID
1SCA022750R7040

Specifications may be subject to change without notice