RHX Explosion Proof

The RHX® Explosion-Proof commercial operators are Factory Mutual (FM) approved for use in hazardous locations in the United States and Canada.  These heavy duty operators feature a wide variety of mounting options for sectional and rolling steel doors and provide reliable operation for the most stringent applications.

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A wide variety of mounting options are available to fit most any application including:

Sectional Doors: Standard, side mount, and dual trolley applications. All models come standard with a dynamic brake system. Side-mount and center-mount chain couple or direct couple to the door shaft with hoist. Hoist models are left or right hand adjustable in the field.

Rolling Steel Doors: With hoist, front of hood, top of hood, bench mount, and wall-mount applications. Hoist models are left or right hand adjustable in the field.



Motors rated for use in hazardous locations. Hoist unit motors available in ½ horsepower single phase, 1 horsepower three phase and 3 horsepower three phase. Trolley models available in ½ horsepower single phase, and 1 horsepower three phase configurations.

True heavy duty gear head design:

This system’s primary drive reduction is via worm gear running in oil bath, which provides reliable operation.

Voltage freedom:

Single phase models provide for 115/208/230V in one unit, and 208/230/460V three phase in another unit.

UL325-2010-Compliant momentary contact close:

Requires addition of monitored external entrapment device to operate with momentary contact in the close direction.

On-Board Open/Close/Stop Switch:

Allows door operation from control panel during installation and service.

Diagnostic LEDs:

Visual indicators allow for easy configuration and service of operator.

Limit Overrun:

Provides overrun adjustment from the lower limit to fine tune the door seal to the floor.

Timed Close:

Enables door to automatically close after user-defined time delay between two seconds to four minutes.

​​Agency Approval​:

RHX® Explosion-Proof operators are Factory Mutual approved for use in hazardous areas in the United States and Canada.

FM approved applications:

  • Class I Division I Group D
  • Class II Division I Groups F and G

Drive reduction:

Primary reduction is worm gear running in oil bath. Secondary reduction is by chain and sprocket.

Direct coupling (optional on sectional doors only):

Provides fast, easy installation and prevents chain slacking. Available as an optional kit for sectional side/center mount and hoist units. For sectional, options include:
  • 14 RPM kit
  • 26 RPM kit

Maximum Run Timer:

Operator shuts down automatically when running time exceeds the time required to run between the limits plus five seconds.

Clutch (standard with trolley; optional with hoist):

Adjustable disc-type helps protect door and operator from major damage should the door meet an obstruction. (Included in 14 and 26 RPM direct couple mounting kits).

Cycle counter:

Indicates the exact number of cycles logged for easy maintenance support.

Adjustable shaft:

Output shaft of the optional direct coupling kits can be moved from one side to the other, providing flexible installation options.


All models come standard with dynamic braking.

Trolley rail assembly:

High strength 2 inch structural angle for added strength and durability.

Limited Warranty:

RHX® operator features a 2-year limited warranty. See installation manual for complete limitations and details.

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