Relays for power electronics

Relays for power electronics

Dold power electronics devices are used for silent switching of electric devices. They are used also for softstarting or braking electric motors. Following devices are available:

Softstarts
Softstarts with DC brake function
DC brakes
Semiconductor contactors
Start up current limiting devices

Select Category:

BH 9253

To reverse 3 phase asynchronuos motors up to 5.5 kW / 400 V

Switching at zero-crossing

Electrical interlocking of both directions

Temperature monitoring to protect the power semiconductors

Measured nominal current up to 20 A

UG 9256

To reverse 3 phase motors from 90 W to 750 W resp. 550 W to 4 kW at AC 400 V

2-phase softstart

max. 4 potentiometers for setting of starting torque, deceleration torque,

softstart /-stop, overcurrent limit or rated motor current

UG 9410

To reverse 3 phase motors up to 0.18 kW … 2.2 kW at 400 V

2-phase softstart, softstop

Modbus RTU-interface

BA 9034N

For all single and 3-phase asynchronous motors

DC-brake with one way rectification up to max. 32 Aeff

Adjustable braking current (controlled current)

BI 9023

Suitable for all squirrel cage motors

Adjustable brake current to 80 A

Adjustable braking time 1 … 20 s

BI 9034

For all single and 3-phase asynchronous motors

DC-brake with one way rectification up to max. 60 A

Adjustable braking current up to max. 60 A

With automatic standstill detection

UG 9019

2-phase softstart and softstop

3-phase motors up to 4 KW

4 potentiometer for setting and starting torque, softstart / -stop

UH 9018

2-phase control softstarter with softstop

For motors from 1.5 kW to 7.5 kW

Adjustable ramp time, starting torque and starting voltage

PF 9029

3-phase controlled softstarter

For motor power up to 18,5 kW

Phase sequence monitoring

Undervoltage/overvoltage monitoring

BI 9025

2-phase control softstarter with softstop

For 3-phase motors up to 15 kW

Adjustable acceleration and deceleration time resp. starting and switch-off torque

Integrated overtemperature monitoring

GF 9016

2-phase control softstarter with softstop

For 3-phase motors up to 22 kW

Adjustable start up and deceleration time as well as starting voltage, optionally with kickstart

Reduce load from supply mains by reducing of starting current

BF 9250

1-, 2- and 3-pole models

Load current up to 50 A

For AC load up to 480 V

Mounting on DIN-rail

PK 9260

AC solid-state relay / -contactor

Load current up to 88 A

Insulation voltage 4000 V

DIN rail or surface mounting

PH 9260

AC semiconductor relay / -contactor

Load current up to 125 A

Insulation voltage 4000 V

DIN rail or surface mounting

PH 9270

AC solid-state relay /-contactor

Load current 40 A

DIN rail or surface mounting

PI 9260

AC semiconductor relay / -contactor

Load current up to 125 A

Insulation voltage 4000 V

DIN rail or surface mounting

Relays for power electronics

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