Unison DC to AC 40 Ampere Solid State Relay

UNI 901 ZDA 48 40 01 AL5 40 Ampere DC to AC Solid State Relay with Zero Cross Over SSR

Unison's UNI 901 ZDA 48 40 01 AL5 is a UL Approved Zero Cross Over DC to AC Solid state Relay (SSR) with 40 Ampere load current @40C (Please note Heatsink required).

Basically A solid state relay (SSR) is an electronic switching device that switches on or off when an external voltage (AC or DC) is applied across its control terminals. It serves the same function as an electromechanical relay, but has no moving parts and therefore results in a longer operational lifetime. 

We have types of SSR and Power devices. Check our complete collection of Solid State Relays.

Advantages of SSR over Electromechanical Relay

• Totally silent operation.
• SSRs switch faster than electromechanical relays; the switching time of a typical optically coupled SSR is dependent on the time needed to power the LED on and off - on the order of microseconds to milliseconds.
• Increased lifetime, even if it is activated many times, as there are no moving parts to wear and no contacts to pit or build up carbon.
• Output resistance remains constant regardless of amount of use.
• Clean, bounceless operation.
• No sparking, allows it to be used in explosive environments.
• Less sensitive to storage and operating environment factors such as mechanical shock, vibration, humidity, and external magnetic fields.

Specification of DC to AC 40 Ampere Solid State Relay

• Model: 901 - 40 Ampere

• Input Voltage: 4-32 VDC 

• Input Current: 4-16 mA

• Input Green LED Induction

• Output :24 - 480 VAc (47-63Hz)

• Load Current: 12 Ampere @40 C.

• PIV: 800V Pk

• Zero Cross Over SSR Design

• Body Insulation : 6kV For 1Min

• I/P to O/P Insulation : 6kV For 1Min

• Inbuilt Surge Voltage Protection Of 2700Vrms

• Long Life Cycle Up to 10^11 Cycle