SS421H Honeywell
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Description
Commercial Solid State Sensor
Representative picture
Datasheets
Tech Specs
| Mounting Style | PCB |
| Output Current | 20.0 mA |
| Number of Pins | 4 |
| RoHS | Compliant |
| Supply Voltage (DC) | 4.50 V (min) |
Series Description
The SS421 Series Adjustable Hall-effect Under-speed Detectors are designed to monitor fan or motor performance. This temperature-compensated, Hall-effect IC contains a timing circuit and logic, that senses magnetic input frequency. The internal circuitry contains a timer so that one or two pulses at a slower repetition rate than the set point do not produce an unwanted output.
A small amount of hysteresis has been built into the output so that operation right at the set point does not result in a chattering output. The user simply provides an external resistor and capacitor combination to select the RPM trip point that will fit the particular application.
Features
- Wide temperature ranges for design flexibility
- Temperature compensated for consistent operation with low-cost magnets
- Bipolar operation for easy RPM counting using ring magnets
- Built-in timing circuit greatly simplifies and reduces the cost of PC board design
- Speed trip point adjustable with external resistor and capacitor
Typical Applications
- Under-speed detection for fans
- Conveyors
- Motor control
- Power-up fault failure filter in motor start-up
About
The Honeywell part SS421H is distributed by Electrol. The product that you are looking to replace may be brand labeled Microswitch, Hobbs, Honeywell, Data Instruments, Pepperl-Fuchs, Sensym, Senasys, Sensotec or Honeywell-Yamatake, all of which are trade names or previous joint ventures between Honeywell and other partners. The Micro Switch brand is a trade name of Honeywell Sensing & Control headquartered in Freeport Illinois and with manufacturing facilities worldwide including the USA, Mexico, France, Germany, the UK, China and Korea. Electrol has been a distributor of Micro Switch products since 1970.
Honeywell Sensing & Control is a world leader in electro-mechanical switching devices for industry, aerospace, medical and defense. The product line up now also includes sensors for pressure, force, humidity and temperature. Electrol stocks a broad range of Honeywell products for immediate shipment including switching devices for hazardous locations, hermetically sealed switches, pressure transducers and wide range of limit switches for virtually every application.
Stock Qty: 0
Prefer to order through one of our trained sales representatives?
We accept Visa, Mastercard and American Express on domestic orders (USA and Canada)
