How to Choose the Right Square D Pumptrol Switch

Choose a Square D Pumptrol pressure switch by matching the complete catalog number, pressure settings, motor voltage, phase and horsepower, contact arrangement, pressure connection, enclosure, mounting requirements, controlled fluid, and any required control feature. A 30/50 or 40/60 PSI label can identify candidates, but it does not confirm electrical or mechanical compatibility. Use this guide to create a shortlist, then verify the exact catalog number against current Schneider Electric documentation before buying or installing it.

Start with the old switch label and pump nameplate

Before shopping, photograph the old pressure-switch label and the pump motor nameplate. Record:

• Complete pressure-switch catalog number, including suffixes
• Motor voltage
• Single-phase or three-phase power
• Motor horsepower
• Required cut-in and cut-out pressures
• Pressure-port size, thread standard, and thread gender
• Indoor, outdoor, damp, or otherwise exposed installation environment
• Controlled fluid
• Required mounting orientation
• Need for low-pressure cutoff or a manual cut-out lever

The full catalog number matters. For example, 9013FSG2J21, 9013FSG2J21M1, and 9013FSG2J21M4 are retailer-listed at 30/50 PSI, but the M1 version adds a manual cut-out lever and the M4 version adds low-pressure cutoff. The same catalog also separates FSG standard-duty and FYG medium-duty products without supplying the complete electrical data needed to treat them as interchangeable (PexUniverse Square D pressure-switch catalog).

Do not assume that FSG, FYG, FR, FYW, and GSG switches share motor ratings, contacts, ports, enclosures, or mounting rules. Verify each selection point in current manufacturer documentation for the complete catalog number. If the necessary exact-model documentation is unavailable, treat a retailer listing as a way to identify a candidate—not as final proof of compatibility.

What 20/40, 30/50, and 40/60 PSI mean

The lower number is normally the cut-in pressure, at which the switch starts the pump. The upper number is the cut-out pressure, at which the switch stops the pump.

For example, the retailer listing for 9013FSG2J24 identifies a factory cut-in of 40 PSI and a factory cut-out of 60 PSI, producing a nominal 20 PSI difference between the thresholds (Fresh Water Systems 9013FSG2J24 listing).

Keep the following specifications separate:

• Factory setting: The cut-in and cut-out pressures supplied for a particular catalog number.
• Adjustable range: The range within which that model’s pressure setting can be adjusted.
• Adjustable differential: The permitted difference between its switching thresholds.
• Maximum allowable pressure: A model-specific limit used in some product listings.
• Destruction pressure: A datasheet specification that is not a continuous operating-pressure rating.

Retailer catalogs list presets of 20/40, 30/50, 40/60, 50/70, and 60/80 PSI. That does not establish that every Pumptrol family is offered or approved at every setting.

The recurring 220 PSI figure needs particular care. Some retailer pages call it maximum allowable pressure, while Schneider Electric datasheets for models such as 9013FRG29J19 label it destruction pressure. Do not treat 220 PSI as a normal operating-pressure rating; use the operating limits in the exact model’s current documentation (Schneider Electric 9013FRG29J19 datasheet).

Square D model comparison: common choices and special variants

This table is for candidate identification. The FSG, FYG, and GSG information comes primarily from retailer listings that do not provide all the electrical, contact, mounting, and environmental specifications needed for final selection.

Catalog number	Listed factory setting	Distinguishing feature
9013FSG2J21	30/50 PSI	Standard pressure cycling
9013FSG2J24	40/60 PSI	Standard pressure cycling
9013FSG2J21M4	30/50 PSI	Low-pressure cutoff with manual reset
9013FSG2J21M1	30/50 PSI	Manual cut-out lever
9013FSG2J24M1	40/60 PSI	Manual cut-out lever
9013FYG2J24 / 9013FYG2J25	40/60 / 60/80 PSI	Different duty family; verify full motor rating

The manufacturer confirms the J21 30/50 PSI setting. The 9013FSG2J21M4 product specification identifies a quarter-inch internal NPSF connection and NEMA 1 enclosure. Treat every suffix and exact motor rating as part of compatibility.

Standard, low-pressure cutoff, or manual cut-out?

Choose the control style according to how the pump must operate:

Requirement	Appropriate type	What to verify
Ordinary automatic pressure cycling	Standard switch	Cut-in/out setting, motor rating, contacts, port, enclosure, and mounting
Pump shutdown following loss of prime	Consider an M4 low-pressure-cutoff model	Exact cutoff behavior, reset requirements, and motor compatibility
Operator specifically needs a manual cut-out lever	Choose an M1 manual-cut-out model	Lever function, complete catalog number, and electrical ratings

Low-pressure cutoff and manual cut-out are optional features tied to particular catalog numbers. They are not included on every Pumptrol switch.

For Type F switches with M4, Schneider describes cutoff at about 10 PSI below cut-in: a 30 PSI cut-in therefore corresponds to about 20 PSI cutoff. It follows the cut-in setting and is not independently adjustable. The switch needs a manual reset after cutoff; it does not automatically restart when pressure returns. Follow the manufacturer’s M4 explanation and investigate the cause before resetting repeatedly.

Duty labels also require context. “Standard duty,” “medium duty,” and “heavy duty” are product categories, not electrical interchangeability ratings. Pump Stop Online markets the 9013GSG family for water pumps and air compressors, while the common FSG listings focus primarily on water-pump applications (Pump Stop Online 9013GSG listing). Application wording alone does not establish that one family can replace another.

Check the specifications that PSI does not tell you

Use this compatibility checklist after identifying a pressure-matched candidate:

1. Voltage: Match the motor’s operating voltage.
2. Phase: Confirm whether the motor is single-phase or three-phase.
3. Horsepower or contact rating: Use the exact rating for that voltage and phase.
4. Contacts: Match the required number, normal state, and arrangement.
5. Pressure connection: Confirm the port size, thread standard, and male or female configuration.
6. Enclosure: Choose an enclosure appropriate for the installation environment.
7. Controlled fluid: Confirm that the switch is specified for the liquid or gas involved.
8. Mounting position: Determine whether any orientation is permitted or a specific position is required.
9. Pressure limits: Keep normal system pressure within the exact model’s allowable operating limits.

A maximum-voltage or rated-insulation-voltage figure does not by itself establish motor compatibility. For example, the FR and FYW datasheets list 575 V rated insulation voltage, but their motor ratings are stated separately for particular voltage, phase, and horsepower combinations. Use the applicable motor-load rating, not the largest voltage number shown on the page.

Contact arrangements can also be fundamentally different. The 9013FRG29J19 has two normally open DPST-DB contacts and model-specific 1 HP at 115 or 230 V AC ratings for single- or three-phase service. The 9013FYW9J99 has two normally closed DPST-DB contacts and lists 2 HP at 115 V single-phase, 3 HP at 115 V three-phase, 3 HP at 230 V single-phase, and 5 HP at 230 V three-phase. These are exact-model examples, not ratings for FSG, FYG, or GSG switches.

Pressure-port descriptions vary as well. The cited sources use 1/4-inch FPT, FNPT, NPSF, generic female, and 0.25-inch external NPT wording. “Quarter-inch” alone therefore does not confirm the thread form or gender. Check the old connection and the exact replacement specification before assuming that an existing fitting will work.

Finally, account for the enclosure and mounting instructions together. The 9013FRG29J19 is listed as NEMA 1 and operable in any position, whereas 9013FYW9J99 is NEMA 3R and requires vertical mounting. A matching pressure range cannot compensate for the wrong contacts, enclosure, or orientation.

Verify wiring and installation information before service

Before removing the cover or servicing the switch, disconnect power and have absence of voltage verified with appropriate equipment. Relieve system pressure before disconnecting pressure plumbing. Follow the exact model’s manufacturer instructions; this selector is not a live-wiring procedure.

Schneider Electric Canada hosts FAQ FA283945, identified as a video about wiring a Square D 9013 power pressure switch. The publicly supplied page information does not provide a terminal-by-terminal procedure or establish that one wiring sequence applies to every 9013 model. Use the current wiring diagram and datasheet for your complete catalog number (Schneider Electric 9013 wiring FAQ).

Do not connect a motor load that exceeds the exact switch’s documented motor or contact rating. A familiar cover design or matching pressure pair does not establish that the old and new terminals have identical functions.

Use a qualified electrician or pump technician when the wiring arrangement, grounding, motor load, installation environment, or replacement compatibility is uncertain. Do not improvise terminal assignments, pressure adjustments, or pressure-tank settings from instructions written for a similar-looking model.

Use price and availability only after compatibility is confirmed

Retail listings are useful for locating a verified catalog number, but they should not determine technical compatibility. Prices, inventory, delivery estimates, review totals, and pickup options can change, and retailer pages may contain inconsistent commercial information.

Use this buying order:

1. Identify a candidate with the required pressure setting and control feature.
2. Obtain the current manufacturer datasheet and wiring information for the complete catalog number.
3. Confirm voltage-, phase-, horsepower-, contact-, port-, enclosure-, fluid-, and mounting compatibility.
4. Verify that the seller’s full catalog number matches the documented model.
5. Compare current price, stock, delivery options, and return terms.

The right Square D pressure switch matches the entire application, not merely the pressure pair. Confirm the complete catalog number, pressure thresholds, motor nameplate ratings, contacts, pressure port, enclosure, mounting position, controlled fluid, and required control feature before ordering or beginning installation.