Mitsubishi Electric MELSERVO-J4 Series Transition Handbook page 276

Part 5: Review on Replacement of MR-J3-DU_ with MR-J4-DU_
(3) MT-BR5-(H) resistor unit
NP
M4
M6
193 189
37 60 10 21
480
510
4φ15 mounting hole
75 300 75
7.5 450
5 - 75
Resistor unit
200 V MT-BR5-55K
class
400 V
MT-BR5-H75K
class
7.5
[Unit: mm]
Approximate
Resistance
mass [kg]
2.0 Ω 50
6.5 Ω 70