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Approvals & Standards

  • IEC/EN 60 947-3
  • For NH fuse-links size 1 in accordance with IEC/EN 60269-2, VDE 0636-2

Key features & benefits

The production programme of MULTIBLOC® 1.RST8 comprises NH fuse switch disconnectors for 250A.
Products are designed in triple pole units for direct installation on to 40 mm and 60mm bus bar systems.
For installation of MULTIBLOC® NH fuse switch disconnectors of different sizes in distribution units with central cover, respective covers are used to obtain a uniform profile in height and length.
MULTIBLOC® size 1 are designed for NH fuse-links in accordance with IEC/EN 60269-2, VDE 0636-2, size 1: 250A.
The system is a modular system, which allows the installation and combination of individual components. 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

M1023051  

Catalogue No.

1.000.855  

Item Description (ERP)

MB1 250A 3P 1.000.855  

Short Description

MULTIBLOC 1.RST8 size 1 / 250A, 3-pole electromechanical fuse monit. installed  

EAN/UPC Code

9008567002131  

Frequency

50 ... 60 Hz   Hz

Rated voltage AC IEC

690   V

Rated voltage DC IEC

440   V

Ampere Rating

250   A

Utilization Category

AC 23 B @ Ue = AC 400 V; Ie = 250 A  

Utilization Category

AC 22 B @ Ue = AC 500 V; Ie = 250 A  

Utilization Category

AC 21 B @ Ue = AC 690 V; Ie = 200 A  

Utilization Category

DC 21 B @ Ue = DC 440 V; Ie = 250 A  

Switchability

Triple pole switching  

ROHS Compliant

Yes  

Short Circuit Current Rating (SCCR)

80kA@Ue = AC 400 V; Ie = 250 A / 80kA@Ue = AC 500 V; Ie = 250 A / 50kA (3-,4-pole)@Ue = AC 690 V; Ie = 200 A  

Fuse Size

1  

Design Details

with electromechanic fuse monitoring MZS installed (galvanic isolation)  

Number of Poles

3-Pole  

Degree of Pollution

3  

Rated Duty

uninterrupted duty  

Rated Impulse Withstand Voltage

12   kV

Rated Insulation Voltage

1000   V

Rated SC Withstand

8 kA / 1 s  

Conventional Free Air thermal Current With Fuse-Links Ith

250   A

Conventional Free Air thermal Current - Solid Links

400   A

Max Power dissipation of Fuse Links Pn

23   W

Max Power dissipation of Solid Links Pn

2.6   W

Power Dissipation by Ith without Fuse-Links

20   W

Rated short circuit making capacity with solid links Icm

8.2   kA

Installation Mounting

Bus bar system 40 mm and 60 mm  

Comments

Cable termination components : 3 M10 terminal screws  

Product Weight

3.8   kg

Product Width

185   mm

Product Length

186.5   mm

Product Height

246   mm

Sell Pack Quantity

1   EACH

Sell Pack Weight

3.8   kg

Sell Pack Width

208   mm

Sell Pack Length

262   mm

Sell Pack Height

185   mm