M3775R Resistive Load Banks Bonitron > Products > Overvoltage > Resistors > M3775R

Fan Cooled Resistor

While Bonitron has been the industry leader for Braking Transistors for years, what better way to compliment that than by offering quality resistors too! Bonitron has a vast standard offering of Braking Resistors and welcomes custom requests as well.

M3775R Braking Resistors are used with Bonitron Braking Transistors to allow full power braking and eliminate overvoltage faults. This permits controlled braking and dramatically shortens motor stopping time. If overvoltage occurs, Bonitron Transistors or the drive's internal brake, shunts excess energy through a Bonitron M3775R Braking Resistor to prevent overvoltage faults.

  • Standard Mill Galvanized Steel
    • 306, 316, etc. Stainless Steel Options
  • NEMA-3R Options
    • (Standard on M3775R Continuous Series)
  • Thermal switch

K9


  Peak
HP
Peak kW Peak Amps Ohms 10% Overhauling (20% Braking) 50% Overhauling Duty Continuous Duty  
Cont. kW Resistor Model Number Dimensions
(H" x W" x D")
Model
Weight
Cont. kW Resistor Model Number Dimensions
(H x W x D)
Cont. kW Resistor Model Number Dimensions
(H" x W " x D")
Model
Weight
230 - 240 VAC | 375VDC
  0.5 0.37 1 375 0.04 M3775RK-L0.50A 5.0" x 14.0" x 4.0" - 0.19 M3775RK-L0.50B 5.0" x 14.0" x 4.0" 0.37 M3775RK-L0.50C 5.0" x 14.0" x 4.0" -  
0.75 0.55 2 250 0.06 M3775RK-L0.75A 0.28 M3775RK-L0.75B 5.0" x 14.0" x 7.0" 0.55 M3775RK-L0.75C 5.0" x 14.0" x 7.0" -
1 0.74 2 190 0.07 M3775RK-L1.00A 0.37 M3775RK-L1.00B 0.74 M3775RK-L1.00C 5.0" x 14.0" x 10.0" -
1.5 1.11 3 125 0.11 M3775RK-L1.50A 0.56 M3775RK-L1.50B 1.11 M3775RK-L1.50C
2 1.5 4 95 0.15 M3775RK-L2.00A 0.75 M3775RK-L2.00B 5.0" x 14.0" x 10.0" 1.5 M3775RK-L2.00C
3 2.2 6 63 0.22 M3775RK-L3.00A 1.10 M3775RK-L3.00B 5.0" x 21.0" x 10.0" 2.2 M3775RK-L3.00C 5.0" x 28.0" x 13.0" -
5 3.7 10 38 0.37 M3775RK-L5.00A 5.0" x 14.0" x 7.0" - 1.85 M3775RK-L5.00B 3.7 M3775RK-L5.00C
7.5 5.5 14 26 0.55 M3775RK-L7.50A 28 lbs 2.75 M3775RK-L7.50B 5.0" x 28.0" x 13.0" 5.5 M3775RK-L7.50C
10 7.5 20 19 0.75 M3775RK-L010A 5.0" x 14.0" x 10.0" - 3.75 M3775RK-L010B 7.5 M3775RK-L010C 11.5" x 29.0" x 18.0" -
15 11 30 12.6 1.1 M3775RK-L015A 5.0" x 14.0" x 13.0" - 5.5 M3775RK-L015B 18.5" x 29.0" x 18.0" 11 M3775RK-L015C
20 15 39 9.6 1.5 M3775RK-L020A 5.0" x 21.0" x 10.0" - 7.5 M3775RK-L020B 15 M3775RK-L020C 18.5" x 29.0" x 18.0" -
25 18 50 7.5 1.8 M3775RK-L025A 9 M3775RK-L025B 18 M3775RK-L025C 25.5" x 29.0" x 18.0" -
30 22 60 6.3 2.2 M3775RK-L030A 5.0" x 28.0" x 13.0" - 11 M3775RK-L030B 25.5" x 29.0" x 18.0" 22 M3775RK-L030C 32.5" x 29.0" x 18.0" 185 lbs
40 30 77 4.9 3.0 M3775RK-L040A 15 M3775RK-L040B 18.5" x 29.0" x 18.0" 30 M3775RK-L040C -
50 37 96 3.9 3.7 M3775RK-L050A 19 M3775RK-L050B 25.5" x 29.0" x 18.0" 37 M3775RK-L050C -
60 44 114 3.3 4.4 M3775RK-L060A 11.5" x 29.0" x 18.0" - 22 M3775RK-L060B 44 M3775RK-L060C 46.5" x 29.0" x 18.0" -
75 55 139 2.7 5.5 M3775RK-L075A 40 lbs 28 M3775RK-L075B 39.5" x 29.0" x 18.0" 55 M3775RF-L075C-3R-VFA Contact Bonitron -
100 75 197 1.9 7.5 M3775RK-L100A - 38 M3775RK-L100B 53.5" x 29.0" x 18.0" 75 M3775RF-L100C-3R-VFA
125 93 234 1.6 9 M3775RK-L125A 18.5" x 29.0" x 18.0" - 47 M3775RK-L125B 93 M3775RF-L125C-3R-VFA
150 111 288 1.3 11 M3775RK-L150A See
M3775RF-L150C-3R-VFA
to
M3775RF-L600C-3R-VFA
--->
111 M3775RF-L150C-3R-VFA
200 150 375 1 15 M3775RK-L200A 25.5" x 29.0" x 18.0" - 150 M3775RF-L200C-3R-VFA
250 186 469 0.8 19 M3775RK-L250A 186 M3775RF-L250C-3R-VFA
300 223 600 0.6 22 M3775RK-L300A 32.5" x 29.0" x 18.0" - 223 M3775RF-L300C-3R-VFA
400 298 800 0.5 30 M3775RK-L400A Contact Bonitron - 298 M3775RF-L400C-3R-VFA
600 447 1200 0.32 45 M3775RK-L600A 447 M3775RF-L600C-3R-VFA
  Peak
HP
Peak kW Peak Amps Ohms 10% Overhauling (20% Braking) 50% Overhauling Duty Continuous Duty  
Cont. kW Resistor Model Number Dimensions
(H" x W" x D")
Model
Weight
Cont. kW Resistor Model Number Dimensions
(H x W x D)
Cont. kW Resistor Model Number Dimensions
(H' x W" x D")
Model
Weight
380 - 415 VAC | 620 VDC
  62.5 47 75 8.27 5 M3775RK-E063A Contact Bonitron 42 lbs 23 M3775RK-E063B Contact Bonitron 47 M3775RK-E063C Contact Bonitron -  
125 93 150 4.13 9 M3775RK-E125A - 47 M3775RK-E125B 93 M3775RF-E125C-3R-VFA
165 123 200 3.1 12 M3775RK-E165A - See
M3775RF-E165C-3R-VFA
to
M3775RF-E1330C-3R-VFA
---->
123 M3775RF-E165C-3R-VFA
250 186 300 2.07 19 M3775RK-E250A - 186 M3775RF-E250C-3R-VFA
500 373 600 1.03 37 M3775RK-E500A - 373 M3775RF-E500C-3R-VFA
665 496 800 0.78 50 M3775RF-E665A-3R-VFA - 496 M3775RF-E665C-3R-VFA
1000 746 1200 0.52 75 M3775RF-E1000A-3R-VFA - 746 M3775RF-E1000C-3R-VFA
1330 992 1600 0.39 99 M3775RF-E1330A-3R-VFA - 992 M3775RF-E1330C-3R-VFA
  Peak
HP
Peak kW Peak Amps Ohms 10% Overhauling (20% Braking) 50% Overhauling Duty Continuous Duty  
Cont. kW Resistor Model Number Dimensions
(H" x W" x D")
Model
Weight
Cont. kW Resistor Model Number Dimensions
(H x W x D)
Cont. kW Resistor Model Number Dimensions
(H" x W" x D")
Model
Weight
460 - 480 VAC | 750VDC
  0.5 0.4 0.5 1500 0.04 M3775RK-H0.50A 5.0" x 14.0" x 4.0" 10 lbs 0.2 M3775RK-H0.50B 5.0" x 14.0" x 7.0" 0.4 M3775RK-H0.50C 5.0" x 21.0" x 10.0" -  
  0.75 0.6 0.75 1000 0.06 M3775RK-H0.75A - 0.3 M3775RK-H0.75B 5.0" x 14.0" x 10.0" 0.6 M3775RK-H0.75C 5.0" x 14.0" x 10.0" -  
  1 0.7 1 750 0.07 M3775RK-H1.00A - 0.4 M3775RK-H1.00B 5.0" x 14.0" x 10.0" 0.7 M3775RK-H1.00C 5.0" x 14.0" x 10.0" -  
  1.5 1.1 1.5 500 0.11 M3775RK-H1.50A 5.0" x 14.0" x 7.0" - 0.6 M3775RK-H1.50B 5.0" x 14.0" x 13.0" 1.1 M3775RK-H1.50C 5.0" x 21.0" x 10.0" -  
  2 1.5 2 375 0.15 M3775RK-H2.00A 0.7 M3775RK-H2.00B 5.0" x 14.0" x 10.0" 1.5 M3775RK-H2.00C 5.0" x 21.0" x 10.0" -  
  3 2.2 3 250 0.22 M3775RK-H3.00A 5.0" x 14.0" x 4.0" - 1.1 M3775RK-H3.00B 5.0" x 14.0" x 13.0" 2.2 M3775RK-H3.00C 5.0" x 21.0" x 10.0" -  
  5 3.7 5 150 0.37 M3775RK-H5.00A 5.0" x 14.0" x 7.0" 9 lbs 1.9 M3775RK-H5.00B 5.0" x 21.0" x 13.0" 3.7 M3775RK-H5.00C 5.0" x 28.0" x 13.0" -  
  7.5 5.6 7.5 100 0.56 M3775RK-H7.50A 5.0" x 14.0" x 10.0" 10 lbs 2.8 M3775RK-H7.50B 5.0" x 28.0" x 13.0" 5.6 M3775RK-H7.50C 18.5" x 29.0" x 18.0" -  
  10 7.5 10 75 0.75 M3775RK-H010A 5.0" x 14.0" x 10.0" 11 lbs 3.7 M3775RK-H010B 11.5" x 29.0" x 18.0" 7.5 M3775RK-H010C 18.5" x 29.0" x 18.0" 95 lbs  
  15 11 15 50 1.1 M3775RK-H015A 5.0" x 14.0" x 13.0" 14 lbs 5.6 M3775RK-H015B 18.5" x 29.0" x 18.0" 11 M3775RK-H015C 18.5" x 29.0" x 18.0" 135 lbs  
  20 15 20 38 1.5 M3775RK-H020A 5.0" x 21.0" x 10.0" - 7.5 M3775RK-H020B 18.5" x 29.0" x 18.0" 15 M3775RK-H020C 25.5" x 29.0" x 18.0" -  
  25 19 25 30 1.9 M3775RK-H025A 5.0" x 21.0" x 10.0" - 9.3 M3775RK-H025B 18.5" x 29.0" x 18.0" 19 M3775RK-H025C 25.5" x 29.0" x 18.0" -  
  30 22 30 25 2.2 M3775RK-H030A 5.0" x 21.0" x 13.0" 21 lbs 11.2 M3775RK-H030B 25.5" x 29.0" x 18.0" 22 M3775RK-H030C 25.5" x 29.0" x 18.0" 130 lbs  
  40 30 40 19 3.0 M3775RK-H040A 5.0" x 28.0" x 13.0" 29 lbs 14.9 M3775RK-H040B 25.5" x 29.0" x 18.0" 30 M3775RK-H040C 35.0" x 29.0" x 18.0" -  
  50 37 50 15 3.7 M3775RK-H050A 14.0" x 29.0" x18.0" 66 lbs 19 M3775RK-H050B 32.5" x 29.0" x 18.0" 37 M3775RK-H050C 39.5" x 29.0" x 18.0" 169 lbs  
  60 45 60 12.6 4.5 M3775RK-H060A 11.5" x 29.0" x 18.0" 60 lbs 22 M3775RK-H060B 39.5" x 29.0" x 18.0" 45 M3775RK-H060C Contact Bonitron -  
  75 56 75 10 5.6 M3775RK-H075A 11.5" x 29.0" x 18.0" 68 lbs 28 M3775RK-H075B 39.5" x 29.0" x 18.0" 56 M3775RF-H075C-3R-VFA  
  100 75 99 7.5 7.5 M3775RK-H100A 18.5" x 29.0" x 18.0" 70 lbs 37 M3775RK-H100B 53.5" x 29.0" x 18.0" 75 M3775RF-H100C-3R-VFA  
  125 93 124 6 9 M3775RK-H125A 18.5" x 29.0" x 18.0" 70 lbs 47 M3775RK-H125B 60.5" x 29.0" x 18.0" 93 M3775RF-H125C-3R-VFA  
  150 112 149 5 11 M3775RK-H150A 25.5" x 29.0" x 18.0" - See
M3775RF-H200C-3R-VFA
to
M3775RF-H1600C-3R-VFA
---->
112 M3775RF-H150C-3R-VFA  
  200 149 199 3.8 15 M3775RK-H200A 25.5" x 29.0" x 18.0" 111 lbs 149 M3775RF-H200C-3R-VFA  
  250 186 249 3 19 M3775RK-H250A 35.0" x 29.0" x 18.0" - 186 M3775RF-H250C-3R-VFA  
  300 224 298 2.5 22 M3775RK-H300A 35.0" x 29.0" x 18.0" 160 lbs 224 M3775RF-H300C-3R-VFA  
  350 261 348 2.2 26 M3775RK-H350A 39.5" x 29.0" x 18.0" 160 lbs 261 M3775RF-H350C-3R-VFA  
  400 298 398 1.9 30 M3775RK-H400A 39.5" x 29.0" x 18.0" 177 lbs 298 M3775RF-H400C-3R-VFA  
  500 373 497 1.5 37 M3775RK-H500A 49.5" x 29.0" x 18.0" 350 lbs 373 M3775RF-H500C-3R-VFA  
  600 447 597 1.25 45 M3775RK-H600A 49.5" x 29.0" x 18.0" 350 lbs 447 M3775RF-H600C-3R-VFA  
  800 597 796 0.94 60 M3775RF-H800A-3R-VFA Contact Bonitron - 597 M3775RF-H800C-3R-VFA  
  1200 895 1194 0.63 89 M3775RF-H1200A-3R-VFA 895 M3775RF-H1200C-3R-VFA  
  1600 1193 1591 0.47 119 M3775RF-H1600A-3R-VFA 1193 M3775RF-H1600C-3R-VFA  
  Peak
HP
Peak kW Peak Amps Ohms 10% Overhauling (20% Braking) 50% Overhauling Duty Continuous Duty  
Cont. kW Resistor Model Number Dimensions
(H" x W" x D")
Model
Weight
Cont. kW Resistor Model Number Dimensions
(H x W x D)
Cont. kW Resistor Model Number   Dimensions
(H x W x D)
575 - 600 VAC | 940VDC
  0.5 0.37 0.4 2000 0.04 M3775RK-C0.50A 5.0" x 14.0" x 4.0" - 0.19 M3775RK-C0.50B 5.0" x 14.0" x 7.0" 0.37 M3775RK-C0.50C 5.0" x 14.0" x 7.0" -  
0.75 0.56 0.6 1500 0.06 M3775RK-C0.75A 0.28 M3775RK-C0.75B 5.0" x 14.0" x 4.0" 0.56 M3775RK-C0.75C
1 0.75 1 1200 0.07 M3775RK-C1.00A 0.37 M3775RK-C1.00B 5.0" x 14.0" x 13.0" 0.75 M3775RK-C1.00C 5.0" x 14.0" x 13.0" -
1.5 1.1 1 800 0.11 M3775RK-C1.50A 0.56 M3775RK-C1.50B 5.0" x 14.0" x 10.0" 1.1 M3775RK-C1.50C 5.0" x 14.0" x 10.0" -
2 1.5 2 575 0.15 M3775RK-C2.00A 5.0" x 14.0" x 7.0" - 0.75 M3775RK-C2.00B 5.0" x 14.0" x 13.0" 1.5 M3775RK-C2.00C 5.0" x 21.0" x 13.0" -
3 2.2 2 400 0.2 M3775RK-C3.00A 1.1 M3775RK-C3.00B 5.0" x 14.0" x 10.0" 2.2 M3775RK-C3.00C 5.0" x 21.0" x 10.0" -
5 3.7 4 235 0.4 M3775RK-C5.00A 1.9 M3775RK-C5.00B 5.0" x 21.0" x 13.0" 3.7 M3775RK-C5.00C 5.0" x 28.0" x 13.0" -
7.5 5.6 6 150 0.6 M3775RK-C7.50A 2.8 M3775RK-C7.50B 5.0" x 28.0" x 13.0" 5.6 M3775RK-C7.50C 11.5" x 29.0" x 18.0" -
10 7.5 8 120 0.7 M3775RK-C010A 5.0" x 14.0" x 10.0" - 3.7 M3775RK-C010B 11.5" x 29.0" x 18.0" 7.5 M3775RK-C010C 18.5" x 29.0" x 18.0" -
15 11 12 78 1 M3775RK-C015A 5.0" x 14.0" x 13.0" - 6 M3775RK-C015B 18.5" x 29.0" x 18.0" 11 M3775RK-C015C
20 15 16 59 1 M3775RK-C020A 5.0" x 21.0" x 10.0" - 7 M3775RK-C020B 15 M3775RK-C020C 25.5" x 29.0" x 18.0" -
25 19 20 47 2 M3775RK-C025A 5.0" x 28.0" x 13.0" - 9 M3775RK-C025B 19 M3775RK-C025C
30 22 24 39 2 M3775RK-C030A 5.0" x 21.0" x 13.0" - 11 M3775RK-C030B 22 M3775RK-C030C 32.5" x 29.0" x 18.0" -
40 30 32 29 3 M3775RK-C040A 5.0" x 28.0" x 13.0" - 15 M3775RK-C040B 25.5" x 29.0" x 18.0" 30 M3775RK-C040C
50 37 41 23 4 M3775RK-C050A 11.5" x 29.0" x 18.0" - 19 M3775RK-C050B 37 M3775RK-C050C 39.5" x 29.0" x 18.0" -
60 45 47 20 4 M3775RK-C060A - 22 M3775RK-C060B 32.5" x 29.0" x 18.0" 45 M3775RK-C060C 53.5" x 29.0" x 18.0" 248 lbs
75 56 60 15.6 6 M3775RK-C075A 50 lbs 28 M3775RK-C075B 46.5" x 29.0" x 18.0" 56 M3775RF-C075C-3R-VFA Contact Bonitron -
100 75 80 11.7 7 M3775RK-C100A 18.5" x 29.0" x 18.0" - 37 M3775RK-C100B 75 M3775RF-C100C-3R-VFA
125 93 101 9.3 9 M3775RK-C125A 47 M3775RK-C125B 60.5" x 29.0" x 18.0" 93 M3775RF-C125C-3R-VFA
150 112 121 7.8 11 M3775RK-C150A See
M3775RF-C150C-3R-VFA
to
M3775RF-C2015C-3R-VFA
---->
112 M3775RF-C150C-3R-VFA
200 149 159 5.9 15 M3775RK-C200A 25.5" x 29.0" x 18.0" 142 lbs 149 M3775RF-C200C-3R-VFA
250 186 200 4.7 19 M3775RK-C250A - 186 M3775RF-C250C-3R-VFA
375 280 300 3.2 28 M3775RK-C375A 39.5" x 29.0" x 18.0" - 280 M3775RF-C375C-3R-VFA
760 567 600 1.6 57 M3775RF-C760A-3R-VFA Contact Bonitron - 567 M3775RF-C760C-3R-VFA
1000 746 800 1.2 75 M3775RF-C1000A-3R-VFA 562 lbs 746 M3775RF-C1000C-3R-VFA
1500 1119 1200 0.78 112 M3775RF-C1500A-3R-VFA - 1119 M3775RF-C1500C-3R-VFA
2015 1503 1600 0.58 150 M3775RF-C2015A-3R-VFA - 1503 M3775RF-C2015C-3R-VFA
  Peak
HP
Peak kW Peak Amps Ohms 10% Overhauling (20% Braking) 50% Overhauling Duty Continuous Duty  
Cont. kW Resistor Model Number Deminsions
(H" x W" x D")
Model
Weight
Cont. kW Resistor Model Number Dimensions
(H x W x D)
Cont. kW Resistor Model Number

Demensions
(H" x W" x D ")

Model
Weight
690 VAC | 1090VDC
  110 82 75 15 8 M3775RK-Y110A Contact Bonitron - See
M3775RF-Y110C-3R-VFA
to
M3775RF-Y2300C-3R-VFA
---->
82 M3775RF-Y110C-3R-VFA Contact Bonitron -  
220 164 150 7.5 16 M3775RK-Y220A 164 M3775RF-Y220C-3R-VFA
300 224 200 5.5 22 M3775RK-Y300A 224 M3775RF-Y300C-3R-VFA
440 328 300 3.6 33 M3775RK-Y440A 328 M3775RF-Y440C-3R-VFA
875 652 600 1.95 65 M3775RF-Y875A-3R-VFA 652 M3775RF-Y875C-3R-VFA
1170 872 800 1.4 87 M3775RF-Y1170A-3R-VFA 872 M3775RF-Y1170C-3R-VFA
1750 1305 1200 0.91 130 M3775RF-Y1750A-3R-VFA 1305 M3775RF-Y1750C-3R-VFA
2300 1715 1600 0.68 172 M3775RF-Y2300A-3R-VFA 1715 M3775RF-Y2300C-3R-VFA
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