Description
The ZP4510 is a compact vertical-mount float switch designed for liquid level detection and control in small tanks, aquariums, water dispensers, and household appliances. It operates on a passive magnetic reed principle: a magnetic float moves vertically along the stem as liquid level changes, actuating a sealed reed switch inside the tube to open or close a circuit . The switch requires no external power for the sensing element—it is a dry contact device that simply makes or breaks a connection when the float reaches its actuation point.
The PP (polypropylene) construction provides good resistance to water and weak chemical environments, making it suitable for potable water and light industrial applications . With a typical contact rating of 10W and a switching current of 0.5A, this switch is intended for low-power control circuits—it should drive a relay or PLC input rather than a pump or motor directly . The float orientation can be inverted to convert between Normally Closed (NC) and Normally Open (NO) operation . The compact body measures approximately 23 × 58mm, suitable for space-constrained installations .
Critical limitations: This is a passive switch, not a continuous level transmitter. The contact rating is limited to 0.5A—do not connect pumps, solenoids, or motors directly without a relay or contactor . The PP body is not suitable for oils, strong solvents, or concentrated acids.
Features
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Vertical Float Design: Compact cylindrical float moves along the stem for top-mounting in small tanks and reservoirs .
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PP Corrosion-Resistant Body: Polypropylene construction suitable for water and weak chemical environments .
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Passive Magnetic Reed Operation: No power supply required for the sensing element; the float magnet actuates the sealed reed switch .
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10W / 0.5A Contact Rating: Suitable for low-power control circuits, PLC inputs, and relay coils .
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Configurable NO/NC Operation: Contact state can be inverted by flipping the float orientation on the stem .
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Compact Size: Approximately 23 × 58mm body, suitable for space-constrained installations .
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M10 Thread: Approximately 9.5–10mm thread diameter for standard tank fittings .
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Wide Application Compatibility: Used in aquariums, water dispensers, humidifiers, coffee machines, and small tanks .
Technical Specifications
| Parameter | Specification (most commonly cited) |
|---|---|
| Model | ZP4510 |
| Body Material | PP (Polypropylene) |
| Mounting Type | Vertical (top-mount) |
| Max Contact Rating | 10W |
| Max Switching Voltage | 100V DC (most suppliers); some list 220V DC/AC |
| Max Switching Current | 0.5A |
| Max Breakdown Voltage | 220V DC (varies by source) |
| Max Carry Current | 1.0A |
| Contact Resistance | ≤100mΩ |
| Operating Temperature | -10~+85°C (most common); some list -20~+80°C |
| Switch Body Size | Approx. 23 × 58mm |
| Thread Diameter | Approx. 9.5–10mm |
| Cable Length | 36cm (most common); your listing states 40cm |
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