DESCRIPTION
Siemens Solid State Relays (SSRs) are miniature, optically-coupled relays with high-voltage MOSFET outputs. The relays are capable of switching ac or dc loads from as little as nanovolts to hundreds of volts. Likewise, the relays can switch currents in the range of nanoamps to hundreds of milliamps. The MOSFET switches are ideal for small signal switching and are primarily suited for dc or audio frequency applications.

FEATURES
• 3750 Vrms or 5300 Vrms I/O isolation
• Current-limit protection built-in
• Linear ac/dc operation
• High-reliability monolithic receptor
• Extremely low leakage current (pA)
• High contact off-impedance (GW)
• Low power consumption (1 mW—12 mW)
• Very low switch offset (typically 0.1 mV)
• Logic compatible
• Clean, bounce-free switching
• Built-in 1 Form C break-before-make
• High surge capability
• Insensitive to dv/dt
• Surface mountable
• Compatible with UL1459 and FCC 68.302
• UL recognized
• CSA certified
• BABT certificate of recognition to BS6301

BENEFITS
• Long life
• Maintenance free
• Current-limit SSRs can sustain repeated faults without damage
• Minimizes drive circuitry
• Noiseless
• Immune to shock
• Immune to environmental hazards  such as salt, dirt, and humidity
• No arcing
• No mounting restrictions
• Preapproved for DAA applications
• High reliability
• Easily configured in series or in parallel  for increased voltage or current

Typical Applications
• ac Switch
• Telephone
• Heater Control
• Light Control
• Switching Systems
• Voltmeters
• Test Equipment
• Modems
• Programmable Controllers
• FAX
• Data Acquisition Systems
• Security Equipment
• Electric Meters
• Ring Relay
• Service Equipment
• E&M Signaling
• Multiplexers
• Scanners
• Motor Controls
• Output Modules
• Thermostats
• Answering Machines
• Battery Switch
• Board Testers
• Gas Pumps
• Appliances