SJE PumpMaster® SPDT 13 Amp Wide Angle Pump Float Switch, Three-Wire Setup for 120/240V Pumps, Adjustable 7"-36" Range

Product Description

SJE PumpMaster® SPDT 13 Amp Wide Angle Pump Float Switch, Three-Wire Setup for 120/240V Pumps, Adjustable 7"-36" Range

Mechanically-Activated Wide Angle Float Switch for Automatic Pump Control

SJE PumpMaster SPDT sump pump float switch is a professional-grade, wide-angle float switch designed for reliable automatic pump control in demanding water and wastewater systems. Built with a 3-wire float switch (SPDT) configuration, this unit can be wired for both pump-up and pump-down applications, making it one of the most versatile pump float switches available.

Cleanflow ships across Canada and the USA with fast, reliable delivery so you get the float switch you need, when you need it.

What Is an SPDT Float Switch?

An SPDT (Single Pole Double Throw) float switch allows you to control two different pump actions using one device:

Pump Down (Normally Open) – Drains water from a tank or sump

Pump Up (Normally Closed) – Fills a tank or basin

This means one sump pump float switch can handle both operations depending on how it’s wired, reducing the need for multiple switches and simplifying your system.

What This SJE PumpMaster Float Switch Does

This float switch automatically turns your pump on or off based on liquid level inside a tank or pit. As the float rises and falls with water or sewage levels, it activates internal contacts to control pump operation.

It is commonly used in:

Septic tanks and sewage pits

Lift stations and wastewater systems

Water storage tanks

Industrial liquid handling systems

Unlike basic float switches, the SJE PumpMaster SPDT is designed for direct pump control, not just signal or control panel applications.

Built for Demanding Pump Applications

The SJE PumpMaster is designed for real-world pump loads—not light-duty control circuits.

Maximum running current: 13 amps

Maximum starting current: 85 amps

Handles pumps up to:

1/2 HP at 120V

1 HP at 230V

This makes it a strong choice for:

Wastewater systems

Sewage applications

High-load pump environments

Unlike cheaper switches, this unit is built to handle the surge current when pumps start.

Designed for Harsh & Turbulent Environments

This SJE PumpMaster float switch is not affected by turbulence or rotation, allowing it to perform reliably in:

Sewage pits with constant agitation

Lift stations with high flow

Industrial tanks with movement

Its high-impact, corrosion-resistant PVC housing is rated for use in water and sewage up to 140°F (60°C).

Adjustable Pumping Range (7" to 36")

The wide-angle design allows for an adjustable pumping range between 7 inches and 36 inches, depending on tether length.

Why this matters:

Reduces pump short cycling

Extends pump life

Improves system efficiency

Longer tether = wider pump cycle

Shorter tether = tighter control

Electrical & Installation Overview

Voltage: 120V / 230V (single phase)

3-wire configuration (SPDT)

Direct wiring required (no plug)

Flexible 16-gauge, 3-conductor cable (SJOW, water-resistant)

Installation Notes:

Must be wired in a dry junction box

Pump voltage and switch voltage must match

Professional installation recommended

Must be used with pumps that have thermal overload protection

Heavy-Duty Construction

High-impact PVC float housing

Corrosion-resistant materials

Stainless steel mounting clamp included

Designed for long-term use in harsh environments

⚠️ Important Usage Notes

This is critical (and often missed):

Designed for HP-rated pump loads only

NOT suitable for:

low-current applications (

control/pilot duty systems

Using it outside its intended application can cause premature failure.

Available Options

Cable lengths:

15 ft

20 ft

30 ft

Direct wire models only (SPDT configuration)

Technical Specifications

Specification

Details

Switch Type

SPDT (3-wire) wide-angle float switch

Voltage

120V / 230V

Max Running Current

13 amps

Max Starting Current

85 amps

Pump Capacity

Up to 1/2 HP (120V), 1 HP (230V)

Pumping Range

7" – 36" adjustable

Cable

16 gauge, 3-conductor SJOW

Float Material

High-impact PVC

Max Temperature

140°F (60°C)

Application

Water, sewage, wastewater

Fast Shipping Across Canada & the USA

Cleanflow supplies the SJE PumpMaster SPDT pump float switch across Canada and the United States with fast, reliable shipping. Need help choosing the right float switch? Our team can help.

Looking for SJE Rhombus controls & alarms? We carry a full range of pump control solutions.

Expand Your Pump Control System

Looking to complete your system or simplify installation? These related products work seamlessly with the SJE PumpMaster float switch:

SJE PumpMaster Plus Float Switch (Piggyback Plug)

Ideal for plug-and-play installations where hardwiring isn’t required. Perfect for quick replacements and residential pump setups.

Float Switches & Pump Accessories

Browse float switches, mounting clamps, cable weights, and accessories to customize your system and improve performance.

Tank Alarm Systems for High/Low Level Monitoring

Add a high water alarm or control panel to monitor liquid levels and prevent overflows, pump failure, or system damage.

Frequently Asked Questions

What is an SPDT float switch?

An SPDT (Single Pole Double Throw) float switch allows you to control a pump in either pump-up or pump-down operation, depending on how it is wired.

What is the difference between pump up and pump down?

Pump down: empties a tank when liquid rises

Pump up: fills a tank when liquid drops

Can this float switch be used in septic systems?

Yes, the SJE PumpMaster float switch is designed for both water and sewage applications and works well in septic tanks and lift stations.

What voltage does this switch support?

It supports both 120V and 230V single-phase pump systems.

Does this float switch come with a plug?

No. SPDT models are designed for direct wiring only.

How do I adjust the pumping range?

The pumping range is adjusted by changing the tether length, typically between 7" and 36".

Can this switch handle heavy-duty pumps?

Yes, it supports up to 85 amps starting current, making it suitable for demanding pump applications.

Is this suitable for low-current control systems?

No. This switch is designed for pump loads and should not be used in low-current (