Durable Littelfuse 59025-1-U-05-A reed sensor with hermetic sealing and multiple sensitivity options
Product Overview
The Littelfuse 59025 Reed Sensor is a compact, cylindrical, non-contact switching solution designed for wet and harsh environments. It offers a choice of normally open, normally closed, or change-over contacts, capable of switching up to 265 Vac/300 Vdc at 10 VA. Ideal for battery-powered IoT applications due to no leakage current in the 'open' state, it facilitates efficient proximity/access and energy management systems. Its hermetically sealed, IP67-rated, and UL/REACH compliant design allows operation through non-ferrous materials like wood, plastic, or aluminum. Available with various sensitivity and cable length options, it functions best with the 57025 actuator and is well-suited for industrial, appliance, and IoT proximity sensing applications.
Product Attributes
- Brand: Littelfuse
- Model: 59025 Reed Sensor
- Certifications: UL Recognized per UL 508, CSA C22.2 No. 14, REACH compliant
- Sealing: Hermetically sealed, IP67 rated
- Housing Material: 30% GF P.B.T
- Color: Black
- Actuator Compatibility: Functions best with 57025 actuator
Technical Specifications
| Specification | Details | Notes |
|---|---|---|
| Dimensions (Sensor) | 25.4 mm (L) x 6.22 mm (Dia.) [1.00 x 0.245] | |
| Contact Types | Normally Open, Normally Closed, Change Over | |
| Max Switching Voltage | 265 Vac / 300 Vdc | |
| Max Switching Power | 10 VA | |
| Operate Time (max) | 1.0 ms (Normally Open/High Voltage), 3.0 ms (Change Over/Normally Closed) | Includes bounce |
| Release Time (max) | 1.0 ms (Normally Open/High Voltage), 3.0 ms (Change Over/Normally Closed) | |
| Shock Rating (max) | 100 G (11ms 12 sine) | |
| Vibration Rating (max) | 30 G (50-2000 Hz) | |
| Operating Temperature | -40 to +105 C (Select Models) | |
| Contact Resistance (Initial) | 0.2 max. | For 300 mm wire length |
| Insulation Resistance | 1010 min. (Select Models), 109 min. (Select Models) | |
| Capacitance (Contact, typ.) | 0.3 pF (Select Models), 0.2 pF (Select Models) | |
| Cable Type | 24 AWG 7/32 PVC 105C UL1430/UL1569 | |
| Cable Length Options | 300 mm [11.81 in], 1000 mm [39.37 in] | Customization options available |
| Termination Options | Tinned leads (6.40.76) mm | |
| Sensitivity Options (Pull-In AT Range) | 12-18 AT (S), 17-23 AT (T), 22-28 AT (U), 27-33 AT (V) | For Normally Open (Switch Type 1) |
| Sensitivity Options (Pull-In AT Range) | 17-23 AT (T), 22-28 AT (U), 27-33 AT (V) | For High Voltage (Switch Type 2) |
| Sensitivity Options (Pull-In AT Range) | 15-20 AT (S), 20-25 AT (T), 25-30 AT (U) | For Change Over (Switch Type 3) |
| Sensitivity Options (Pull-In AT Range) | 15-20 AT (S), 20-25 AT (T), 25-30 AT (U) | For Normally Closed (Switch Type 4) |
| Applications | Security and access control, Factory automation, Process equipment, Major appliances, Small appliances, Proximity and limit sensing |
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