The 153D-200E-PB from Dart Controls is an enclosed brushed DC motor speed control for a 120/240 VAC supply, rated 10 A, with a 0 to 90 VDC and 180 VDC load.
The 153D-200C from Dart Controls is a chassis-mount brushed DC motor speed control for a 120/240 VAC supply, rated 6 A, with a 0 to 90 VDC and 180 VDC load.