ERECTA SWITCH® by Compac Engineering
Series 15 · ERECTA SWITCH®

15-650-LP — Low Profile Receptacle Switch Set

Side-mount level switch with rain-tight low profile receptacle. 360° nipple rotation for wire exit angle positioning. Installs from outside. Hermetically sealed reed switch, N.O. or N.C. by orientation. Available in Polypropylene, Acetal, and Kynar PVDF.

Choose Your 15-650-LP Material

The 15-650-LP is available in three wetted materials. Polypropylene for water-based and mild chemical service. Acetal for solvents, fuels, and hydrocarbons. Kynar PVDF for aggressive acids, halogens, and ultra-high-purity applications.

What’s Included

  • 15-650 side mount level switch
  • Low profile receptacle housing with 360° nipple rotation
  • 24 in lead wire
  • Jam nut and O-ring

Specifications

Common specifications across all 15-650-LP material variants.

SpecificationValue
Series15-650-LP
Switch ElementStandex/OKI ORD229, hermetically sealed reed
HousingLow profile receptacle, rain-tight, 360° nipple rotation
Contact Rating70 VA, 50W resistive
Max Current0.5A AC / 0.7A DC
Mount1/2 NPT outside-in OR 1/4" straight thread inside-out
Float Diameter0.70 in (17.78 mm)
Overall Length4.45 in (113.03 mm)
Lead Wire24 in (609 mm)
Pressure Rating50 PSI @ 20°C; derate to zero @ 90°C
Temp Max90°C
SG Min0.80
ComplianceRoHS
Frequently Asked Questions

Common Questions About This Product

What is the difference between a float level switch and a liquid level sensor?

A float level switch like the 15-650-LP is a point-level device: a float rides the liquid and actuates a magnetic reed switch at a set height, giving a simple on/off signal — no power, no firmware, no calibration. "Sensors" usually means continuous measurement (ultrasonic, radar, capacitive). ERECTA SWITCH targets reliable discrete-point control.

What are the typical applications for the 15-650-LP?

The 15-650-LP is used for pump start/stop control, high-level overflow protection, low-level dry-run protection, and tank or reservoir level alarms in OEM equipment. The modular ERECTA SWITCH system is built into laundry, HVAC, water-treatment, hydraulic, and chemical-handling machinery.

What liquid chemistries is the 15-650-LP compatible with?

Choose the material to match the media: Polypropylene (PP) for general aqueous, acids, and bases; Acetal (AC/Delrin) for solvents, fuels, and hydrocarbons; Kynar PVDF (KR) for aggressive or harsh chemicals. Every ERECTA SWITCH model is offered in all three materials.

Is the 15-650-LP a point-level or continuous-level device?

The 15-650-LP is point-level — it provides a discrete on/off signal at a set height. For multiple switch points, use a multi-level extended-stem set (2-, 3-, or 4-level) instead of a single continuous sensor.

What mounting options are available for the 15-650-LP?

ERECTA SWITCH offers vertical top-mount, bulkhead, and extended-stem configurations, plus side-mounted single-point models. The mount style is part of the model number — select the configuration that matches your tank geometry.

How is the actuation level set on the 15-650-LP, and how accurate is it?

Point detection is repeatable and mechanical. The trip height on the 15-650-LP is set by the 10-715 Precision Nipple, ordered separately in 1-inch increments (1″–70″), so you place the switch point exactly where the application needs it.

Need Help Selecting a Material?

Our engineering team can verify chemical compatibility with your application before you order.