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Resistor REOHM Series BW 155

Max. continuous power: 3.000 W

Description

Braking resistor for drives with medium- to high-power frequency converters. Can be installed inside or outside the control cabinet.

Advantages

  • small dimensions
  • fast connection
  • Compatible with any frequency converter
  • Requires little additional mounting space
  • Optional with cover and temperature switch
  • Optionally available for harsh environments (e.g., salt spray)
  • Protection rating up to IP66

Typical Applications

For drives with small- to medium-power frequency converters installed near the frequency converter: Test voltage 2.5 kV AC

Case Studies

Check out our application example to see how BW 155 series braking resistors enhance safety and reliability in amusement park rides.

Type Resistance Values*
R [ohms]
Continuous Power
P [W] IP20
Continuous Power
P [W] IP65, IP66
max. max.operating voltage
U [V]
BW 155 / 1000 / IP … 1 – 1000 1000 600 900
BW 155 / 1200 / IP … 1,2 – 300 1200 800
BW 155 / 1500 / IP … 1,5 – 280 1500 1000
BW 155 / 2000 / IP … 2 – 1440 2000 1500
BW 155 / 2500 / IP … 2,5 – 600 2500 1875
BW 155 / 3000 / IP … 3 – 750 3000 2250
BW 155 / 3500 / IP … 4 – 750 3500 2500

*Other resistance values on request.

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Type Dimensions Connection Cable
B1
[mm]
B2
[mm]
H
[mm]
L1
[mm]
L2
[mm]
L3
[mm]
D
[mm]
BW 155 / 1000 / … 175 165 75 182 120 250 6,5 IP20
PTFE AWG14
BW 155 / 1200 / … 175 165 75 242 180 250 6,5
BW 155 / 1500 / … 175 165 75 342 280 250 6,5
BW 155 / 2000 / … 175 165 75 542 500 250 6,5
BW 155 / 2500 / … 175 165 75 672 630 250 6,5
BW 155 / 3000 / … 175 165 75 762 720 250 6,5
BW 155 / 3500 / … 175 165 75 872 830 250 6,5

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*

Type Dimensions Connection Cable
B1
[mm]
B2
[mm]
H
[mm]
L1
[mm]
L2
[mm]
L3
[mm]
D
[mm]
BW 155 / 1000 / … 175 165 75 182 120 1000 6,5 IP65 (IP66)
shielded connection cable
3 x 1.5 mm² or 3 x 2.5 mm²
BW 155 / 1200 / … 175 165 75 242 180 1000 6,5
BW 155 / 1500 / … 175 165 75 342 280 1000 6,5
BW 155 / 2000 / … 175 165 75 542 500 1000 6,5
BW 155 / 2500 / … 175 165 75 672 630 1000 6,5
BW 155 / 3000/ … 175 165 75 762 720 1000 6,5
BW 155 / 3500 / … 175 165 75 872 830 1000 6,5

*With small resistance values, the conductor cross-section is adapted to the current

Typ Abmessungen
L1
[mm]
L2
[mm]
B1
[mm]
B2
[mm]
H
[mm]
D
[mm]
BW 155 / 1000 / … 470 440 275 225 200 7,0 x 10,0
BW 155 / 1200 / … 530 500 275 225 200 7,0 x 10,0
BW 155 / 1500 / … 630 600 275 225 200 7,0 x 10,0
BW 155 / 2000 / … 830 800 275 225 200 7,0 x 10,0
BW 155 / 2500 / … 960 930 275 225 200 7,0 x 10,0
BW 155 / 3000/ … 1050 1020 275 225 200 7,0 x 10,0
BW 155 / 3500/ … 1160 1130 275 225 200 7,0 x 10,0

In the event of destruction, the resistor becomes high-impedance, which is why every series is available with a temperature switch. The specified power values were recorded with the resistors positioned horizontally in the air, at a minimum distance of 100mm from the substrate. The power values refer to the standard products with a normal tolerance of +/- 10% at an ambient temperature of 20°C.

We are also happy to manufacture customized solutions outside our standard portfolio – please contact us!

All data and configurations can be found in our product data sheet.

Download datasheet

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