M3452-S100

Braking Transistors for 72VDC Servo Drives 

M3452 Heavy Duty Braking Transistor

Bonitron Braking Transistors are used with DC servo drives to allow full power braking and eliminate overvoltage faults. This permits controlled braking and dramatically shortens motor stopping time. The M3452-S100 series are ideal for drives with no internal braking transistor and work with variable frequency drives to monitor the DC bus. If overvoltage occurs, the braking transistor shunts the excess energy through a braking resistor to prevent overvoltage faults.

Braking resistors are also available from Bonitron.

The M3452-S100 series is rated for 15% duty. The compact design allows for simple DIN rail mounting, making installation fast and flexible for any control cabinet setup.

Product Highlights

  • Protect from overvoltage faults caused by regenerative voltage.
  • 15% duty cycle
  • Powered from DC bus
  • can be installed as retrofit or with initial installation
  • Easily connects to drive DC bus terminals
  • Dramatically shortens time required for motor shutdown
  • Increase process uptime
Base
Model Number		 Braking
Current
(Peak)		 Continuous
Current		 Minimum
Resistance		 Dimensions
(H" x W" x D")
230 - 240VAC | 375VDC Setpoint
M3452-S100N78-DIN 100 A 15 A 19 Ω 5.65" x 4.15" x 3.17"
Power
(Peak)		 Control
Voltage		 Base
Model Number		 Braking
Current
(Peak)		 Braking
Current
(RMS)		 Minimum
Resistance		 Dimensions
(H" x W" x D")		 UL and CUL Listing User Manual
(Control Options)
380 - 415VAC | 620VDC Setpoint
62.5 HP 120 VAC M3452-U75EB7 75 A 75 A 8.27 Ω 17.75" x 7.00" x 8.10"   A
62.5 HP 380 VAC M3452-E75B7 75 A 75 A 8.27 Ω 17.75" x 7.00" x 8.10"   A
125 HP 120 VAC M3452-U150EB7 150 A 150 A 4.13 Ω 17.75" x 7.00" x 8.10"   A
125 HP 380 VAC M3452-E150B7 150 A 150 A 4.13 Ω 17.75" x 7.00" x 8.10"   A
160 HP 120 VAC M3452-U200EK6 200 A 200 A 3.10 Ω 20.00" x 7.12" x 10.50"   R7, R7E, R7EIP, R7PNET
160 HP 380 VAC M3452-E200K6 200 A 200 A 3.10 Ω 20.00" x 7.12" x 10.50"   R7, R7E, R7EIP, R7PNET
240 HP 120 VAC M3452-U300EK6 300 A 300 A 2.07 Ω 20.00" x 7.12" x 10.50"   R7, R7E, R7EIP, R7PNET
240 HP 380 VAC M3452-E300K6 300 A 300 A 2.07 Ω 20.00" x 7.12" x 10.50"   R7, R7E, R7EIP, R7PNET
490 HP 120 VAC M3452-U600EK6 600 A 300 A 1.03 Ω 20.00" x 7.12" x 10.50"   R7, R7E, R7EIP, R7PNET
490 HP 380 VAC M3452-E600K6 600 A 300 A 1.03 Ω 20.00" x 7.12" x 10.50"   R7, R7E, R7EIP, R7PNET
660 HP 120 VAC M3452-U800EK9 800 A 400 A 0.78 Ω 20.00" x 10.00" x 10.25"   R7, R7E, R7EIP, R7PNET
660 HP 380 VAC M3452-E800K9 800 A 400 A 0.78 Ω 20.00" x 10.00" x 10.25"   R7, R7E, R7EIP, R7PNET
1000 HP 120 VAC M3452-U1200EK10 1200 A 600 A 0.52 Ω 20.00" x 10.00" x 10.50"   R7, R7E, R7EIP, R7PNET
1000 HP 380 VAC M3452-E1200K10 1200 A 600 A 0.52 Ω 20.00" x 10.00" x 10.50"   R7, R7E, R7EIP, R7PNET
1330 HP 120 VAC M3452-U1600EM14 1600 A 1200 A 0.39 Ω 28.00" x 13.90" x 14.60"   R7, R7E, R7EIP, R7PNET
1330 HP 380 VAC M3452-E1600M14 1600 A 1200 A 0.39 Ω 28.00" x 13.90" x 14.60"   R7, R7E, R7EIP, R7PNET
1330 HP 120 VAC M3452-U1600ET10 1600 A 1200 A 0.39 Ω 30.59" x 10.12" x 19.18"   R7, R7E, R7EIP, R7PNET
1330 HP 380 VAC M3452-E1600T10 1600 A 1200 A 0.39 Ω 30.59" x 10.12" x 19.18"   R7, R7E, R7EIP, R7PNET
Power
(Peak)		 Control
Voltage		 Base
Model Number		 Braking
Current
(Peak)		 Braking
Current
(RMS)		 Minimum
Resistance		 Dimensions
(H" x W" x D")		 UL and CUL Listing User Manual
(Control Options)
460 - 480VAC | 750VDC Setpoint
75 HP 120 VAC M3452-U75HB7 75 A 75 A 10.00 Ω 17.75" x 7.00" x 8.10" UL and CUL A
75 HP 460 VAC M3452-H75B7 75 A 75 A 10.00 Ω 17.75" x 7.00" x 8.10" UL and CUL A
150 HP 120 VAC M3452-U150HB7 150 A 150 A 5.00 Ω 17.75" x 7.00" x 8.10" UL and CUL A
150 HP 460 VAC M3452-H150B7 150 A 150 A 5.00 Ω 17.75" x 7.00" x 8.10" UL and CUL A
200 HP 120 VAC M3452-U200HK6 200 A 200 A 3.80 Ω 20.00" x 7.12" x 10.50" UL and CUL R7, R7E, R7EIP, R7PNET
200 HP 460 VAC M3452-H200K6 200 A 200 A 3.80 Ω 20.00" x 7.12" x 10.50" UL and CUL R7, R7E, R7EIP, R7PNET
300 HP 120 VAC M3452-U300HK6 300 A 300 A 2.50 Ω 20.00" x 7.12" x 10.50" UL and CUL R7, R7E, R7EIP, R7PNET
300 HP 460 VAC M3452-H300K6 300 A 300 A 2.5 Ω 20.00" x 7.12" x 10.50" UL and CUL R7, R7E, R7EIP, R7PNET
600 HP 120 VAC M3452-U600HK6 600 A 300 A 1.25 Ω 20.00" x 7.12" x 10.50" UL and CUL R7, R7E, R7EIP, R7PNET
600 HP 460 VAC M3452-H600K6 600 A 300 A 1.25 Ω 20.00" x 7.12" x 10.50" UL and CUL R7, R7E, R7EIP, R7PNET
800 HP 120 VAC M3452-U800HK9 800 A 400 A 0.93 Ω 20.00" x 9.05" x 10.25"   R7, R7E, R7EIP, R7PNET
800 HP 460 VAC M3452-H800K9 800 A 400 A 0.93 Ω 20.00" x 9.05" x 10.25"   R7, R7E, R7EIP, R7PNET
1200 HP 120 VAC M3452-U1200HK10 1200 A 600 A 0.63 Ω 20.00" x 10.00" x 10.50"   R7, R7E, R7EIP, R7PNET
1200 HP 460 VAC M3452-H1200K10 1200 A 600 A 0.63 Ω 20.00" x 10.00" x 10.50"   R7, R7E, R7EIP, R7PNET
1600 HP 120 VAC M3452-U1600HM14 1600 A 1200 A 0.47 Ω 28.00" x 13.90" x 14.60" UL and CUL R7, R7E, R7EIP, R7PNET
1600 HP 460 VAC M3452-H1600M14 1600 A 1200 A 0.47 Ω 28.00" x 13.90" x 14.60" UL and CUL R7, R7E, R7EIP, R7PNET
1600 HP 120 VAC M3452-U1600HT10 1600 A 1200 A 0.47 Ω 30.59" x 10.12" x 19.18"   R7, R7E, R7EIP, R7PNET
1600 HP 460 VAC M3452-H1600T10 1600 A 1200 A 0.47 Ω 30.59" x 10.12" x 19.18"   R7, R7E, R7EIP, R7PNET
Power
(Peak)		 Control
Voltage		 Base
Model Number		 Braking
Current
(Peak)		 Braking
Current
(RMS)		 Minimum
Resistance		 Dimensions
(H" x W" x D")		 UL and CUL Listing User Manual
(Control Options)
575 - 600VAC | 940VDC Setpoint
95 HP 120 VAC M3452-U75CB7 75 A 75 A 12.50 Ω 17.75" x 7.00" x 8.10" UL and CUL A
95 HP 575 VAC M3452-C75B7 75 A 75 A 12.50 Ω 17.75" x 7.00" x 8.10" UL and CUL A
190 HP 120 VAC M3452-U150CB7 150 A 150 A 6.30 Ω 17.75" x 7.00" x 8.10" UL and CUL A
190 HP 575 VAC M3452-C150B7 150 A 150 A 6.30 Ω 17.75" x 7.00" x 8.10" UL and CUL A
250 HP 120 VAC M3452-U200CK6 200 A 200 A 4.70 Ω 20.00" x 7.12" x 10.50" UL and CUL R7, R7E, R7EIP, R7PNET
250 HP 575 VAC M3452-C200K6 200 A 200 A 4.70 Ω 20.00" x 7.12" x 10.50" UL and CUL R7, R7E, R7EIP, R7PNET
380 HP 120 VAC M3452-U300CK6 300 A 300 A 3.20 Ω 20.00" x 7.12" x 10.50" UL and CUL R7, R7E, R7EIP, R7PNET
380 HP 575 VAC M3452-C300K6 300 A 300 A 3.20 Ω 20.00" x 7.12" x 10.50" UL and CUL R7, R7E, R7EIP, R7PNET
760 HP 120 VAC M3452-U600CK6 600 A 300 A 1.60 Ω 20.00" x 7.12" x 10.50" UL and CUL R7, R7E, R7EIP, R7PNET
760 HP 575 VAC M3452-C600K6 600 A 300 A 1.60 Ω 20.00" x 7.12" x 10.50" UL and CUL R7, R7E, R7EIP, R7PNET
1000 HP 120 VAC M3452-U800CK9 800 A 400 A 1.20 Ω 20.00" x 9.05" x 10.25"   R7, R7E, R7EIP, R7PNET
1000 HP 575 VAC M3452-C800K9 800 A 400 A 1.20 Ω 20.00" x 9.05" x 10.25"   R7, R7E, R7EIP, R7PNET
1500 HP 120 VAC M3452-U1200CK10 1200 A 600 A 0.78 Ω 20.00" x 10.00" x 10.50"   R7, R7E, R7EIP, R7PNET
1500 HP 575 VAC M3452-C1200K10 1200 A 600 A 0.78 Ω 20.00" x 10.00" x 10.50"   R7, R7E, R7EIP, R7PNET
2015 HP 120 VAC M3452-U1600CM14 1600 A 1200 A 0.58 Ω 28.00" x 13.90" x 14.60" UL and CUL R7, R7E, R7EIP, R7PNET
2015 HP 575 VAC M3452-C1600M14 1600 A 1200 A 0.58 Ω 28.00" x 13.90" x 14.60" UL and CUL R7, R7E, R7EIP, R7PNET
2015 HP 120 VAC M3452-U1600CT10 1600 A 1200 A 0.58 Ω 30.59" x 10.12" x 19.18"   R7, R7E, R7EIP, R7PNET
2015 HP 575 VAC M3452-C1600T10 1600 A 1200 A 0.58 Ω 30.59" x 10.12" x 19.18"   R7, R7E, R7EIP, R7PNET
Power
(Peak)		 Control
Voltage		 Base
Model Number		 Braking
Current
(Peak)		 Braking
Current
(RMS)		 Minimum
Resistance		 Dimensions
(H" x W" x D")		 UL and CUL Listing User Manual
(Control Options)
690VAC | 1090VDC Setpoint
110 HP 120 VAC M3452-U75YB7 75 A 75 A 14.50 Ω 17.75" x 7.00" x 8.10"   A
220 HP 120 VAC M3452-U150YB7 150 A 150 A 7.30 Ω 17.75" x 7.00" x 8.10"   A
300 HP 120 VAC M3452-U200YK6 200 A 200 A 5.50 Ω 20.00" x 7.12" x 10.50"   R7, R7E, R7EIP, R7PNET
440 HP 120 VAC M3452-U300YK6 300 A 300 A 3.60 Ω 20.00" x 7.12" x 10.50"   R7, R7E, R7EIP, R7PNET
875 HP 120 VAC M3452-U600YK6 600 A 300 A 1.95 Ω 20.00" x 7.12" x 10.50"   R7, R7E, R7EIP, R7PNET
1170 HP 120 VAC M3452-U800YK9 800 A 400 A 1.40 Ω 20.00" x 7.12" x 10.50"   R7, R7E, R7EIP, R7PNET
1750 HP 120 VAC M3452-U1200YK10 1200 A 600 A 0.91 Ω 20.00" x 10.00" x 10.50"   R7, R7E, R8EIP, R8PDP
2300 HP 120 VAC M3452-U1600YM14 1600 A 1200 A 0.91 Ω 20.00" x 7.12" x 10.50"   R7, R7E, R8EIP, R8PDP
M3452B7 Braking Transistor
B7
17.75"H x 7.00"W x 8.10"D
M3452K6 Braking Transistor
K6
20.00"H x 7.12"W x 10.50"D
M3452K9 Braking Transistor
K9
20.00"H x 9.05"W x 10.25"D
M3452K10 Braking Transistor
K10
20.00"H x 10.00"W x 10.50"D
M3452M14 Braking Transistor
M14
28.00"H x 13.90"W x 14.60"D
M3452T10 Braking Transistor
T10
30.59"H x 10.12"W x 19.18"D
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