TE Connectivity FS-02 Flow Switch 3/4 BSP SPST
TE Connectivity FS-02 flow switch with 3/4 BSPT thread, SPST normally open contact, noryl housing and IP65 rating for water and air flow.
The TE Connectivity FS-02 Flow Switch is a 3/4 BSPT flow switch with an SPST normally open reed contact, designed for liquid flow detection in water and air systems. It forms part of the FS series and is engineered from noryl, a durable material with chemical resistance. The switch uses low-voltage AC control circuitry and detects flow rates below 1 litre per minute, making it sensitive to low-flow conditions.
Overview
The black noryl housing and noryl shuttle are paired with ruthenium contact material for long-term electrical reliability. The switch is rated to a maximum pressure of 10 bar at 20°C and carries an IP65 rating, providing protection against dust and water jets. It operates from a very small head of water with minimal pressure drop.
Key Features
- SPST (Single Pole Single Throw) reed switch, normally open, closing when flow is detected
- Detects flow rates below 1 litre per minute
- Ruthenium contact material
- IP65 rating for protection against dust and water jets
- Maximum pressure of 10 bar at 20°C
Applications
The switch is suitable for switching both hot and cold potable water as well as air flow. Typical applications include mains water control, power showers, central heating systems, circulation pump protection, and various cooling systems. It is designed for vertical mounting with a flow-upwards orientation.
Specifications
- Connection: 3/4 BSPT thread for straightforward in-line installation
- Maximum switching voltage: 250V AC or 200V DC
- Contact rating: 0.5A
- Cabling: 1.0 metre double-insulated 0.5mm² BS6500 PVC cable supplied
- Operating temperature: -30°C to +85°C
- Certifications: UL file E153493 for the reed switch; housing meets UL 94-HB flammability rating
- Dimensions (W x D x H): 3.3 x 1.5 x 4.3
- Weight: 135 gm
The TE Connectivity FS-02 Flow Switch is suited to applications where a 3/4 BSPT in-line switch with an SPST normally open contact is required to monitor water or air flow.
- Mains water control
- Power showers
- Central heating systems
- Circulation pump protection
- Switch Type: SPST (Single Pole Single Throw) normally open reed switch
- Material: Noryl (housing and shuttle)
- Contact Material: Ruthenium
- Maximum Pressure: 10 bar at 20°C
- IP Rating: IP65
- Flow Detection: Below 1 litre per minute
- Mounting: Vertical, flow-upwards orientation
- Fluid Compatibility: Hot and cold potable water, air flow
- Connection: 3/4 BSPT
- Maximum Switching Voltage: 250V AC or 200V DC
- Contact Rating: 0.5A
- Cable: 1.0 metre double-insulated 0.5mm² BS6500 PVC
- Operating Temperature: -30°C to +85°C
- Certifications: UL file E153493 (reed switch); UL 94-HB (housing)
- Width: 3.3
- Depth: 1.5
- Height: 4.3
- Weight: 135 gm
Always follow local regulations and product guidance.
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