Mechanical Float Switch

MLS

DESCRIPTION
Features

Mechanical Float Switch

The MLS Series Mechanical Float Switch offers flexibility with adjustable switch points and hysteresis, making it perfect for a variety of pump control applications. Equipped with a 10A SPDT miniature switch, it provides direct control over small horsepower pumps. The MLS switch features field-adjustable float stops for precise switch point control; simply loosen the screw, adjust the float stop, and tighten again. With mechanical hysteresis, the switch ensures reliable on/off control as the float reaches the top and bottom stops, ideal for pump operation.

Customizable Control: Adjustable switch point and hysteresis
Direct Pump Operation: 10A SPDT switch for direct pump control
Precision Adjustment: Field-adjustable float stops for precise control
Stable & Consistent: Mechanical hysteresis for consistent performance
Rugged Durability: Durable construction with stainless steel float and polycarbonate housing

Description
Additional information

MLS Datasheet

MLS User Manual

Performance

SPDT miniature switch

Environmental

Operating Temperature: -32º – 176ºF (0º – 80ºC)
NEMA 1, IP42

Connectivity

Output Contact Rating: 250 V 10 A AC; 250 V 0.4 A DC (resistive)

Physical

Housing: Polycarbonate
Stem: 304 SS
Float: 304 SS
Protective Bellows: Neoprene/Silicone

Certifications

NEMA 1, IP42

What is the MLS Series Mechanical Float Switch used for?

The MLS Series Mechanical Float Switch is designed for pump control applications, providing adjustable switch points and hysteresis to ensure reliable on/off operation. It is ideal for controlling small horsepower pumps in various environments.

How does the adjustable switch point work?

The switch features field-adjustable float stops, allowing users to modify the switch point by loosening the screw, repositioning the float stop, and tightening it again. This flexibility ensures precise control over pump activation levels.

What is mechanical hysteresis, and why is it important?

Mechanical hysteresis ensures that the switch does not rapidly turn on and off due to minor fluctuations in fluid level. Instead, it activates when the float reaches the top stop and deactivates when it reaches the bottom stop, reducing unnecessary cycling and improving pump efficiency.

What type of switch does the MLS Series use?

It is equipped with a 10A SPDT miniature switch, allowing direct control of small horsepower pumps. The switch can be configured as normally open (NO) or normally closed (NC) depending on application needs.

What materials are used in the MLS Series for durability?

The MLS Series features a stainless steel (304SS) float and rod, a polycarbonate housing, and a neoprene protective bellows, ensuring durability and resistance to environmental factors.

SWITCH TYPE	Stem Mounted
SWITCH POINTS	1 SPDT
ENCLOSURE PROTECTION	IP42, NEMA 1
INDUSTRY	Chemical, Industrial Automation, Oil & Gas, Water & Wastewater
OUTPUT	Voltage

WARRANTY

APG warrants its products to be free from defects in material and workmanship under normal use and service of the product for 24 months from the date of shipment from APG, unless otherwise specified by APG in writing. Read our full warranty policy HERE.

RETURNS

Returns and allowances must be authorized by APG in advance, which authorization may be granted or withheld by APG in APG’s sole and absolute discretion. Read our full return policy HERE.