User Manual

Enclosed Resistor Modules, Enclosed Transistor Modules

Snubber Transistor Kits (M3575TH__, M3575TL__)

The figure below depicts the breakdown of the Enclosed Transistor kit part number.

Enclosed Transistor Braking Unit Status Indicators

Braking units have the following status indicators:

• DC BUS: A green LED that turns on when the DC bus voltage is equal to or greater than 90 VDC.

• ACTIVE BRAKING: A red LED that turns on when the dynamic braking transistor turns on. Note that if this

indicator is on continuously, the AC line voltage may be high. Use an input transformer to reduce the

incoming AC line voltage to the AC drive or consult your local Rockwell Automation - Reliance Electric sales

office for assistance.

Enclosed Transistor Braking Unit Fault Outputs

Enclosed Transistor Braking units have one normally-closed contact (NC) rated at 2 amps, 125 VDC or

125 VAC that opens on the following fault conditions:

• loss of DC bus voltage

• open load

• Overtemperature

• transistor failure

Table 4 – Enclosed Transistor Kit Ratings

AC Line

Voltage

Braking Kit

Model Number Amps DC RMS

Minimum Load

Resistance (

Ω)

Enclosure

Type

230 M3575TL15 15 25 M3

M3575TL30 30 12.5

M3575TL60 60 6.25 M4

460 M3575TH15 15 50 M3

M3575TH30 30 25

M3575TH75 75 10 M4

M3575TH125 125 6 B4

M3575TH150 150 5

M3575TH200 200 3.75 B7

M3575TH300 300 2.5

M3575T L 30

Base Model Number

AC Voltage Rating

L = 230 VAC

H = 460 VAC

DC Current Rating