Overview
The Magnetrol C29-1B30-DOB is a float-operated liquid level switch designed for industrial fluid monitoring and control. Built to Series 3 specifications, this switch combines mechanical simplicity with dependable performance for high-pressure vessels and process control systems. The flanged external cage design allows direct mounting onto tank walls or pressure vessels with minimal installation complexity.
Key Features
- Float-activated mechanism — responsive, instantaneous level detection without electronics or calibration drift
- High-pressure rated — 500 PSIG maximum operating pressure supports heavy industrial duty
- Standard electrical contacts — 10A capacity at 120VAC (50/60Hz) for direct control of solenoids, pumps, and alarms
- Flanged external cage construction — proven design reduces installation footprint and minimizes maintenance access issues
- Adjustable differential — user-selectable hysteresis for precise on/off setpoints
Technical Specifications
| Switch Contact Rating | 10A at 120VAC, 50/60Hz |
| Maximum Pressure | 500 PSIG |
| Operating Voltage | 120VAC, 50/60Hz |
| Part Number | C29-1B30-DOB |
| Manufacturer | Magnetrol International |
| Product Series | Series 3 Liquid Level Switches |
| Switch Type | Float-activated, single switch |
| Housing Material | Flanged external cage |
| Connection Type | Flanged to vessel |
Typical Applications
- Storage tank high/low level alarm and shutoff control
- Pressure vessel overfill protection and pump enable logic
- Sump pit and collection basin level monitoring
- Petroleum, water, and light chemical service industries
- Heating system and hot water tank level control
- Industrial process automation requiring float-switch reliability
Compatibility & Replacements
Compatible With
- 120VAC single-phase control circuits and PLC input modules
- Solenoid valve drivers and motor starter logic
- Industrial alarm and notification systems
- Magnetrol Series 3 system configurations
- Standard industrial pressure vessel mounting flanges
Replaces / Drop-In Replacement For
- Verify compatibility with your system integrator or equipment OEM before ordering to confirm direct interchangeability with your existing installation.
Works With
- Direct 120VAC control wiring (no electronics required)
- PLC analog and digital input modules with 120VAC sensing
- Motor starters, solenoid valves, and electromechanical relays
- Industrial automation systems requiring simple float-switch integration
- Legacy and modern control architectures (hardware-independent)
