ES and DBR braking resistors

Cressall’s standard ranges of high capacity dynamic braking resistors (DBRs) for regenerative braking are low cost, easy to specify, quick to install and with ratings to suit inverter drives of any power.
Our wide range of resistor technologies means that we can select the most technically appropriate and cost-effective resistor design for any application, whether continuous, intermittent or infrequent.
We offer two product ranges
ES and DBR ranges for powers up to 25kW
ES & BRAKING RESISTOR DESIGNS UP TO 25KW

Cressall ES and DBR braking resistors are based on two types of resistor elements:
HP Coils: spiral wire-wound coils on ceramic formers
ZC Coils: edge-wound coiled strip on ceramic formers
Both elements offer high overload capacity and rapid cooling.

The alloys used have low changes in resistance over the temperature range: no more than 18%, unlike designs using 304 stainless steel which can increase in resistance during the heating cycle by as much as 50%, resulting in lower braking currents and less effective braking.

  • Our ES range is usually available from stock so there’s no waiting for the right DBR
  • Spiral wire wound resistor element on ceramic former
  • Negligible noise
  • Low inductance
  • Temperature stable design, low increase of resistance value
  • Optional thermal switch
  • Terminal block mounted at one end of the enclosure, cover for terminal block, allow for ingress protection IP 20
  • Easy installation: Pre-drilled mounting holes, knock-outs in terminal cover, units suitable for horizontal or side mounting.
  • Wire or wound edge-wound strip resistor element
  • Temperature stable design, low increase of resistance value
  • Standard thermal switch
  • Option for IP21 drip proof canopies
    Integral terminal compartment
  • Easy installation: Pre-drilled mounting holes, knock-outs in terminal compartment, units suitable for horizontal or side mounting.
  • Option for 304 stainless steel enclosures
  • Dispatched from stock for common sizes, manufactured in a few days for other ratings.
 
Power
kW
DBRResistance
Min. Value
Resistance
Tolerance
Dimensions
mm
Mounting
centres
Weight
Kg
    LWHwl 
0.6kWESH4.7Ω-0/+5%288121141236921.4
1kWEST6.8Ω-0/+5%367121141315921.8
1.5kWES110.0Ω-0/+5%467121141415922.2
2kWEST23.3Ω-0/+5%3672131413151853
3kWES25.0Ω-0/+5%4672131414151853.8
4.5kWES33.3Ω-0/+5%4673071414152785.4
6kWES41.5Ω-0/+5%5003881954103606.6
8kWES80.75Ω-0/+5%50038839041036011.5
6kWDBR122.7Ω-0/+10%76633014070029016
9kWDBR182.7Ω-0/+10%79836030269228025
12kWDBR242.7Ω-0/+10%79836030269228033
18kWDBR361.5Ω-0/+10%79836040269228045
25kWDBR541.5Ω-0/+10%79854240269246260