Solid State Relay Monitor
A new Solid State Relay Monitor from NPH Heater signals loss of AC or DC line current, open load, short circuit, and loss of DC power. Eight models are available for different power supplies and line voltage.
Designed to fit between the connection terminals and the finger-safe cover of a standard solid state relay (SSR), the monitor shows a green LED to indicate normal operation. Alarm response time is typically less than 50 mS, and a normally closed dry relay contact (200 VDC/0.5 A max.) opens on alarm. An optional interrupted version forces the SSR's input off every 10 seconds for 150-200mS to test I/O logic (-I).
Four models of the Solid State Relay Monitor are available to handle AC line voltages ranging from 100 to 660 VAC, while four others are designed for DC loads ranging from 100 to 500 VDC. Within each group are two models for continuous input and two for interrupted input, each designed for one of two voltage ranges: 10-19 or 20-32 VDC. The control voltages of the monitored SSR can range from 5 to 32 VDC continuous or from 5 to 15 VDC interrupted.
The operating temperature range if the monitor is 0-60°C. Input/output isolation is 4000 Vrms (25°C for 1 sec.). The SSR off-state leakage current is 6 mA rms maximum across the SSR output. Off-state blocking voltage is 1200 Vpk with a maximum variation of 1 minute.
The unit is designed to fit snugly on the SSR. Dimensions are 1.55" x 2.5".
NPH Heater, is a leader in the design, manufacture, and marketing of DIN Rail Mounted Solid State Relay Assemblies. The engineering and support personnel are experts in the application and design of Solid State Relay Assemblies and are available for consultation on all projects. Additional products from NPH Heater include Dual Relays, Solid State Relay Monitors, and Current Transducers. The company's user-friendly rating system eliminates the need for thermal engineering and ensures optimal performance for rated environments.
For more information, contact us
phone: 416.491.8436 fax: 416.491.2433
toll free: 1.877.674.9744
sales@nphheaters.com
