Overview
The CSH 012M1A float switch is a mechanical level-sensing switch designed for pump and tank control in industrial and commercial water applications. It delivers 120VAC, 15A, 1/2HP ratings with a feed-through plug configuration. This float switch operates on simple mechanical principle—as liquid level rises or falls, the float arm triggers the internal switch contact, making it ideal for sump pump control, water tank fill/drain systems, and reservoir management.
Key Features
- Electrical Rating: 120VAC, 15A, 1/2HP
- Connection Type: Feed-through plug design for direct outlet connection
- Mechanical float arm operation—no electronics to fail
- Compact, space-efficient mounting
- Long service life for standard water and light industrial liquids
Technical Specifications
- Rated Voltage: 120VAC
- Rated Current: 15A
- Horsepower Rating: 1/2HP
- Connection Method: Feed-through plug
- Switching Type: Float-actuated mechanical
- Manufacturer: CSH Incorporated
- Part Number: 012M1A
- Weight: ~2.2 lbs
- Status: Discontinued by manufacturer; suitable stock available
Typical Applications
- Sump pump control and protection
- Water tank fill/drain automation
- Reservoir level monitoring
- Lift station pump switching
- Commercial HVAC condensate drain control
- Industrial coolant tank management
Compatibility & Replacements
Compatible With
- Standard 120VAC single-phase pump motors up to 1/2HP
- Sump pump systems and water tank control circuits
- Direct plug-in to 120VAC outlet for feed-through operation
- Water, light oil, and coolant fluids
Replaces / Drop-In Replacement For
- S-10-D listed as possible replacement
- Legacy CSH float switch applications
- Verify compatibility with your system before ordering
Works With
- 120VAC single-phase power supplies
- Submersible and non-submersible pump circuits
- Mechanical float-switch control systems (no software/network integration)
- Standard electrical conduit and outlet connections




