Low voltage switchgear

MODUL-K-425-SYSTEM

Technologically advanced, compact low voltage switchgear system with a cubicle depth of 425 mm (design verified / type tested)

Characteristics

The Modul-K-425-System is a technologically advanced low-voltage switchgear system. The cubicle’s compact external dimensions leave more space for what really matters at the place of installation. The modular plug-in system enables flexible system modifications and changing of individual units safely under live conditions – guaranteeing a high level of system availability.

Technical data

 
Standards Type-tested low-voltage
switchgear and controlgear assemblies
DIN EN (IEC) 61439-2,
DIN VDE 0660-600-1+2
Protection against
electric shock
DIN VDE 50274,
DIN VDE 0660 part 514

Testing of behaviour in
case of internal faults
(accidental arcs)
IEC 61641,
DIN VDE 0660-500, 
sh. 2
 
Air-gap and leakage paths Rated impulse withstand
voltage (Uimp)
12 kV
Overvoltage category III
Pollution severity 3
 
Rated insulation voltage
(Ui)
1000 V
 
Rated operational
voltage (Ue)
690 V
 
Busbars E-CU-F30 Main busbars 1250 A to 2000 A
Surface Bare
(optional insulation)
Busbar cross-section 50 % PE (PEN) 100 % N
(optional)
Rated peak withstand
current
Ipk 0,1sec up to 162 kA
Rated short time
current
Icw 1sec up to 68 kA
 
Main electrical equipment ACB up to 2500 A
MCCB up to 1600 A
NH fuse switch
disconnector
up to 630 A, mounting size 00 / 1 / 2 / 3
Motor relay Therm. / electron. / bus
controlled (PROFIBUS,
PROFINET)
 
Motor starters Coordination Type 1 or 2 (IEC 60947-4-1) According to typicals
 
Internal separation Form 2b to form 4b IEC 61439-1
 
Metal parts Frame Chrome steel (stainless)
Doors, side walls Powder-coated steel
(standard colour
RAL 7035, other
colours on request)
Internal sheets Steel
 
Degree of protection IEC 60529 / DIN 40050 IP 31 (higher ratings
available if required)
 
Operating conditions DIN EN 60947-1 /
DIN EN 61439-1
Min -5 °C, max +45 °C, 35 °C 24 h average
 
Cubicle dimensions Height 1800 / 2000 / 2250 mm
Width 600 / 900 / 1000 mm
Depth 425 mm


All mentioned ratings above are nominal ratings and catalogue values.
Derating has to be considered depending on specific built-in status and operating conditions (e.g. temperature, IP protection etc.).

Incoming/outgoing feeder cubicles

Incoming feeder cubicles


MCCB up to 1600 A
ACB up to 2500 A

  • Fixed-mounted, withdrawable type; 3 or 4-pole
  • With isolated meter niche
  • Seperate cable connection compartment
  • Access from front or bottom
  • Safe operation of circuit breakers with closed door
  • Voltage surge protection
  • Power metering stations (optionally with bus technology)


Outgoing feeder cubicles


MCCB up to 1600 A
ACB up to 2500 A

  • Fixed-mounted, withdrawable type; 3 or 4-pole
  • With isolated meter niche
  • Seperate cable connection compartment
  • Access from above or below
  • Safe operation of circuit breakers with closed door
  • Power metering stations (optionally with bus technology)


NH fuse switch disconnector

  • drill-free, fixed-mounted installation technology from 125 A to 630 A (mounting size 00 / 1 / 2 / 3)
  • With optional meter compartment for metering gear and small outlets
  • Cable feeder with or without metering devices and measuring instruments
  • Spacious cable connection compartment
  • Drill-free connecting system


Plug-in technology

  • From 125 A to 630 A (mounting size 00 / 1 / 2 / 3)
  • 3 or 4-pole
  • Isolated distribution busbar system
  • Incoming and outgoing air ventilator systems for cubicle loads up to 1800A
  • Simultaneous connection from top and bottom
  • Cable feeder with or without metering devices and measuring instruments


Fixed-mounted, modular technology

  • Up to 400 A (630 A)
  • Internal separation up to form 4b
  • 3 or 4-pole
  • Isolated distribution busbar system
  • Field loads up to 2000 A
  • Side cable connection compartment 400 mm, optionally 600 mm
  • Simultaneous connection from top and bottom
  • Cable feeder with or without metering devices and measuring instruments
  • Combination of fixed-mounted and plug-in technology
  • Individual combination of module plates
  • Circuit-breaker outlets
  • Motor feeders


Modular plug-in technology

  • Internal separation up to form 4b
  • 3 or 4-pole
  • Isolated distribution busbar system
  • Incoming and outgoing air ventilator systems for cubicle loads up to 1800A
  • Access from above and below possible at same time
  • Individual configuration of plug-in modules


For small loads

  • Cable feeder at top or bottom
  • Device compartment with metal sheets
  • individul configuration of device compartment

Additional details

  • Design verified and tested for resistance to internal faults for maximum system and personal safety
  • Our development and construction includes ongoing product improvement and modification in line with market developments
  • Standard dimensions to ensure that all models are expandable
  • Prefabricated installation spaces for all installed devices and expansion components
  • High quality and sound construction for industrial applications with few system modules for maximum system availability and in modern industrial design
  • With flexibility for customer-specified solutions
  • Several patented component solutions, including: Busbar system, multifunctional struts, bus connections, MCC contact switches
  • Persistent development of our drill-free connection and plug system, including the PE/PEN/N bus
  • Produced using CNC-controlled laser machines and press brakes
  • All cubicle frames made from chrome steel, stainless without surface coating
  • Internal partitioning as per Form 4b in circuit-breaker panels, in-line fuse switch disconnector panels and MCC (Motor Control Centre) cubicles
  • Circuit-breakers designed for parallel cable connection
  • Cable/bus connection from top or bottom possible
  • Optional busduct from transformer to switchgear system
  • Cable terminal boards with integrated cable tray and cover panels for cable feeding from above
  • Reactive power compensation systems with modular fixed assembly and automatic ventilator control for long service life
  • Multi-variable busbar system
  • Uniform busbar system, expandable on both sides in short switch off times (approx. 20 minutes), using new drill-free busbar connector
  • Easy installation of switching devices due to drill-free connectors
  • Easy installation of current transducers in the NH strip-type fuses
  • Dirt-resistant specially designed top panel
  • Integrated base for the switchgear system
  • Corner switch panel also possible as system solution