Section 1
General Information
A-4 Appendix MN715
Dynamic Braking (DB) Hardware Continued
RGA Assemblies
RGA Assemblies include braking resistors completely assembled and mounted in a
NEMA 1 enclosure. A listing of available RGA assemblies is provided in Table A-2. The
minimum resistance Minimum Ohms shown in the table is the minimum resistor value
that can be connected to the control without causing damage to the internal dynamic
brake transistor for E, ER and MR controls.
RGA assemblies can also be used with EO and MO controls in combination with an RTA
assembly when more than 4000 watts of brake capacity is needed. In this case, the
minimum resistance of the RGA assembly must be equal to or greater than the minimum
resistance specified for the RTA assembly. Refer to Section 3 Optional Dynamic Brake
Hardware for wiring diagram.
Table A-2 Dynamic Braking Resistor Assemblies (RGA)
Input HP Minimum Continuous Rated Watts
Volts Ohms 600 1200 2400 4800 6400 9600 14200
230 1 - 2 30 RGA630 RGA1230 RGA2430
3 - 5 20 RGA620 RGA1220 RGA2420 RGA4820
7.5 - 10 10 RGA1210 RGA2410 RGA4810
15 - 20 6 RGA1206 RGA2406 RGA4806
25 - 40 4 RGA1204 RGA2404 RGA4804
50 2 RGA2402 RGA4802 RGA6402 RGA9602 RGA14202
460 1 - 3 120 RGA6120 RGA12120 RGA24120
5 - 7.5 60 RGA660 RGA1260 RGA2460 RGA4860
10 30 RGA630 RGA1230 RGA2430 RGA4830
15 - 25 20 RGA620 RGA1220 RGA2420 RGA4820
30 - 60 10 RGA1210 RGA2410 RGA4810
75 - 250 4 RGA1204 RGA2404 RGA4804 RGA6404 RGA9604 RGA14204
300 - 450 2 RGA2402 RGA4802 RGA6402 RGA9602 RGA14202
575 1 - 2 200 RGA6200 RGA12200 RGA24200
3 - 5 120 RGA6120 RGA12120 RGA24120
7.5 - 10 60 RGA660 RGA1260 RGA2460 RGA4860
15 30 RGA630 RGA1230 RGA2430 RGA4830
20 - 30 24 RGA1224 RGA2424 RGA4824
40 - 150 14 RGA2414 RGA4814 RGA6414 RGA9614 RGA14214