Thyristor switch - thyroswitch 2P

KBR thyristor switch - thyroswitch 2P

thyristor switch - thyroswitch 2P

The thyristor switch - thyroswitch 2P is a compact unit ready for connection and enables tuned and detuned capacitors to be connected and disconnected quickly and with no wear and tear. thyroswitch off ers signifi cant advantages over conventional standard protections. Among other things, load on the capacitors is reduced by controlled switching, which increases their working life. When switched on, there is no peak inrush current, wear and tear on the switch contacts does not occur.

The thyroswitch is controlled via the multicomp reactive power controller or directly via the machine control. The thyroswitch 2P has two thyristors which switch phases L1 and L3. Phase L2 is connected, but not switched on. If the switch-on procedure is activated via a reactive power controller or a control, there is a voltage comparison between the capacitor voltage and the mains voltage. If there is a slight difference, the stage is switched on.


  • Unlimited switching frequency without load on capacitors
  • No peak inrush current when switching on capacitors
  • Low switching delay
  • Compensation almost in real-time
  • No operating noise

Technical data


Control input:

10 – 30 V DC | max. 30 mA
180 – 260 V AC | 50 / 60 Hz | max. 20 mA

Fuse protection: max. 6 A
Power supply
Hilfsspannung: 230 V AC | 50/60Hz | max. 18VA

max. 6 A

Load circuit
Connection voltage UN: 400/500 V | 50/60 Hz (type-dependent, see table)
Load current: 70/90/115 A (type-dependent, see table)
Power dissipation: 70 A-Typ ca. 2,2 W pro A
90/115 A-Typ ca. 2,1 W pro A
Field of application
Creepage distances from control input to power circuit: > 10.5 mm for SELV voltages
Rated voltage: UN ± 10 %
Harmonics voltage: DIN EN 61000-2-4 Klasse 3 | THD max. 10 %
Closing delay turn-off time > 5s
Input: DC: 0 bis max. 20 ms
AC: 10 bis max. 30 ms
Reclosing delay: chopping operation
Input: DC: 0 bis max. 33 ms
AC: 10 bis max. 43 ms
Electrical safety: Standards and amendments
Protection class: I
Distances: EN61010:2001 for contamination degree II,
measurement category III
Protection type: IP 10
Environmental conditions
Standards and following amendments: DIN EN 60721-3-3/A2
(3K5 + 3Z11)
EC 721-3-3 (3K5 + 3Z11)
Air humidity, non-condensing: 5 % bis 95 %
Operating temperature: –5 °C to +55 °C - observe performance restriction depending on ambient temperature.
Storage temperature: -25 °C to +70 °C
Installation position: Vertical or horizontal
Cooling clearances: Min. 50 mm to the fan and min. 150 mm to the heat sink outlet
Sizes in mm (H x W x D): 220 x 105 x 185 mm
220 x 105 x 198 mm (type 115 A)

approx. 2900 g
approx. 3600 g (type 115 A)


Technical data sheet (341 KB)

Technical details (118 KB)

User manual (1310 KB)

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