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Approvals & Standards

  • IEC/EN 60 947-3
  • For NH-fuse links size 4a in accordance with IEC/EN 60 269-2, VDE 0636-2

Key features & benefits

The production programme of MULTIBLOC® series 4a.ST8 - 1250 A comprises NH fuse switch disconnectors for 1250A.
They are designed for bottom fitting/panel installation and are available in single pole and triple pole units.
MULTIBLOC® size 4a are designed for NH fuse-links in accordance with IEC/EN 60269-2, VDE 0636-2, size 4a, 1250A.
MULTIBLOC® offers the user the possibility of fast and easy installation as well as a high degree of security during installation and maintenance.

More specifications

Applications

  • Panel boards for industrial use
  • Feeder pillars for industrial use
  • Meter distribution units
  • Measuring transformer cabinets
  • Transmitting stations for telecommunications

Product Specifications

Item Number

T1023080  

Catalogue No.

1.000.083  

Item Description (ERP)

MB4a 1250A 1P 1.000.083  

Short Description

MULTIBLOC size 4a / 1250A, 1-pole M16 terminal screws  

EAN/UPC Code

4027597026516  

Frequency

50 ... 60 Hz   Hz

Rated voltage AC IEC

400   V

Ampere Rating

1250   A

Utilization Category

AC 22 B @ Ue = AC 400 V; Ie = 1250 A  

Utilization Category

DC 20 B @ Ue = DC 1000 V; Ie = 1250 A (with solid links)  

Switchability

1-,3-pole switching  

ROHS Compliant

Yes  

Fuse Size

4a  

Number of Poles

1-Pole  

Degree of Pollution

3  

Rated Duty

uninterrupted duty  

Rated Impulse Withstand Voltage

8   kV

Rated Insulation Voltage

800   V

Rated SC Withstand

50 kA / 1 s  

Conventional Free Air thermal Current With Fuse-Links Ith

1250   A

Conventional Free Air thermal Current - Solid Links

1500   A

Max Power dissipation of Fuse Links Pn

115   W

Max Power dissipation of Solid Links Pn

42   W

Power Dissipation by Ith without Fuse-Links

55   W

Power Dissipation by Ith without Solid Links

55   W

Rated short circuit making capacity with solid links Icm

100   kA

Installation Mounting

Bottom Fitting/panel  

Comments

Cable termination components : M16 terminal screws  

Product Weight

4.1   kg

Product Width

126   mm

Product Length

233   mm

Product Height

330   mm

Sell Pack Quantity

1   EACH

Sell Pack Weight

4.1   kg

Sell Pack Width

157   mm

Sell Pack Length

345   mm

Sell Pack Height

250   mm