MMTC PBS-3FRS Interior Forward-Reverse-Stop Control Station
The MMTC PBS-3FRS is a NEMA 1 interior three-button surface-mount control station labeled for FORWARD, REVERSE, and STOP. It is used where the operator or equipment movement is better described by directional motor commands instead of OPEN-CLOSE or UP-DOWN labels. Typical applications can include compatible industrial equipment, specialty door controls, conveyor-type equipment, or operator circuits designed for forward and reverse commands.
This station is a command device, not a motor controller by itself. It must be connected to a compatible control circuit that is designed to accept these momentary push-button inputs. The STOP circuit should be checked against the wiring diagram because stop functions are often wired differently than the movement commands.
PBS-3FRS should not be selected just because it has three buttons. It belongs to the PBS interior surface-mount family, but the legends and intended use are different from PBS-3, PBS-3UDS, and foreign-language PBS-3S versions. Match the part number, labeling, contact logic, and enclosure before replacing an existing station.
Compatible With
This product is commonly used with the following applications when the operator control circuit, wiring terminals, enclosure needs, and site layout match the part being replaced or added:
- Interior operator control circuits using FORWARD-REVERSE-STOP command labels.
- Commercial or industrial control panels that accept compatible momentary push-button command inputs.
- Specialty door, equipment, or operator controls where forward and reverse direction labels are required.
- Replacement for matching PBS-3FRS installations with NEMA 1 interior surface-mount housing.
- Related PBS surface-mount station applications when button legends and contact layout are verified.
Because control stations and accessory devices are wired into the operator control circuit, verify the terminal labels, contact type, voltage rating, enclosure rating, and required command functions before ordering.
Features and Specifications
| Manufacturer | MMTC |
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| Product Type | Interior three button surface mount control station |
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| Part Number | PBS-3FRS |
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| Button Function | FORWARD-REVERSE-STOP |
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| Enclosure Rating | NEMA 1 interior |
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| Enclosure Material / Style | Metal enclosure |
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| Mounting Style | Surface mount |
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| Dimensions | H=5-5/16 in, W=2-3/8 in, D=1-13/16 in |
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| Application | Interior command station for compatible control circuits |
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| Notes | Select by command labels and wiring requirements, not by button count alone. |
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Also Known As / Related Part Numbers
- MMTC PBS-3FRS
- PBS-3FRS
- MMTC-PBS-3FRS
- Forward-Reverse-Stop station
- NEMA 1 three button interior station
- Related: PBS-3, PBS-3UDS, PBS-3S, PBS-3R
Technician Note
PBS-3FRS is intended for forward/reverse labeled circuits. If the equipment is a door or gate using OPEN-CLOSE-STOP terminology, verify that this label set is acceptable before ordering.
Before Ordering Checklist
- Confirm FORWARD-REVERSE-STOP legends are required.
- Verify NEMA 1 interior mounting is acceptable.
- Confirm the control circuit accepts momentary push-button inputs.
- Check STOP contact requirements against the operator diagram.
- Compare the original station part number and button labels.
Professional Advisory
Installation should follow the operator manufacturer's wiring diagram and all applicable safety requirements. Do not bypass stop circuits, monitored safety devices, entrapment protection, or required warning devices. If the operator uses high voltage wiring or the control circuit is not clearly identified, have the work performed by a qualified gate or commercial door technician.
Product Questions and Answers
What does PBS-3FRS mean?
It identifies an MMTC PBS series interior surface-mount station with FORWARD, REVERSE, and STOP button functions.
Is this the same as PBS-3UDS?
No. PBS-3UDS is labeled UP-DOWN-STOP, while PBS-3FRS is labeled FORWARD-REVERSE-STOP.
Can this station directly power a motor?
No. It is a control station for a compatible control circuit, not a motor starter or power switching device by itself.
Is it weatherproof?
No. PBS-3FRS is a NEMA 1 interior station and should not be installed where an exterior NEMA 4 or NEMA 4X enclosure is needed.
What should I check before ordering?
Match the labels, button count, contact requirements, housing size, and operator wiring diagram.
