Relays RSS Series RSS Series -- Panel Mount Solid State Relays Key features of the RSS series include: * Input status LED Indicator * Dual SCR output * Direct bond copper substrate * Internal transient protection - built-in snubber * EMC compliant (level 3) * Photo isolation * 1200 volt blocking voltage * 4000 volt optical isolation * Zero voltage turn-on * 100% tested at rated current * High surge capability * Optional finger-safe terminal cover (RSS-CVR) E Input Specifications Relays UL Recognized File No. E194577 10, 25, 50, 75, 90A Current Ratings 48V AC to 660V AC Output Ratings Series RSSDN RSSAN Voltage Range 4 to 32V DC 90 to 280V AC Input Current current regulated (10mA) Pick Up Voltage 4V DC 90V AC Drop Out Voltage 1V DC 10V AC Dielectric Strength (Input-Output-Base) 4000 RMS (min) Output Specifications Part Numbers: RSS Series Continuous Output Current 4000 RMS (min) Capacitance (Input to Output) 8pF 8pF Rev. Voltage Protection Yes (-32VDC) N/A Current (continuous) 10A 25A 50A 75A 90A 1-Cycle Surge Current 150A 300A 750A 1000A 1200A 1-Second Surge Current 30A 75A 150A 225A 300A 100mA 100mA 100mA Minimum Holding Current 50mA 50mA E-36 Part Numbers Voltage Drop at Rated Current 1.6V (maximum) Voltage Range 48 - 660V AC Contact 1 Form A (SPST-NO) Over Voltage Rating 1200 PIV Frequency Range 47 to 80Hz Off-State Leakage at Rated Voltage 20mA (maximum) Turn-On Time 1/2 cycle @ 60Hz Turn-Off Time 1/2 cycle @ 60Hz Zero Voltage Switching Yes Static DV/DT 200V/sec Commutating DV/T Snubbed for 0.5 power factor at rated load Weight 10g (approx.) www.idec.com DC Input AC Input 10A RSSDN-10A RSSAN-10A 25A RSSDN-25A RSSAN-25A 50A RSSDN-50A RSSAN-50A 75A RSSDN-75A RSSAN-75A 90A RSSDN-90A RSSAN-90A The fingersafe cover is part no. RSS-CVR. USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC Relays RSS Series Recommended Loads Transformer Loads Transformer loads sometimes result in severe inrush current when the transformer saturates during the first cycle. Use a relay rated for this surge, which has a 1/2 cycle surge current greater than the maximum applied line voltage / the transformer's primary resistance (approximately 10x rated current). Recommended Loads SSR Rating at 120V AC 2A 150VA Recommended Loads at 240V AC SSR Rating 300VA 4A 200VA 400VA 10A 500VA 1KVA 25A 1KVA 2KVA 50A 2KVA 4KVA Lamp Loads Zero voltage switching is ideal for driving incandescent lamps, since the cold filament will not be subjected to a large inrush current. Using a zero-switched SSR will reduce inrush current and prolong lamp life. 2A Heater Loads When using solid state relays for driving heaters where the load is switched on and off rapidly and continuously, severe thermal stress will result. In such cases, use an SSR relay at no more than 75% of the rating. at 120V AC at 240V AC 2A 2A 4A 3A 3A 10A 1KW 2KW 25A 2KW 4KW 50A 3KW 6KW Internal Circuit Block Diagram 1 TRIGGER CIRCUIT at 240V AC 2A 250W 500W 4A 400W 800W 10A 1KW 2KW 25A 2KW 4KW 50A 3KW 6KW Relays at 120V AC SNUBBER Recommended Loads SSR Rating E 4 3 2 AC INPUT EQUIVALENT CIRCUIT 4 1 Recommended Loads SSR Rating 3 at 120V AC 2A TRIGGER CIRCUIT 250W SNUBBER Solenoid Valves and Contactors RSS relays use high-noise immunity circuitry with a snubber to handle the electrical noise generated by inductive loads. 2 DC INPUT EQUIVALENT CIRCUIT at 240V AC 500W 4A 400W 800W 10A 900W 1,800W 25A 2,100W 4,200W 50A 3,800W 7,500W RSS series relays provide a highly reliable means of switching AC loads when applied properly. Read the following technical notes prior to installing IDEC's quality solid state relays. UL Motor Load Ratings (HP Ratings) Part Number 120V 240V 480V 10A 1/2 3/4 3/4 25A 1/2 3/4 3/4 50A 3/4 1 1/ 1 1 /2 75A 3/4 5 5 90A 3/4 5 5 www.idec.com 2 USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC E-37 Relays RSS Series Technical Notes Environment Do not install SSRs near sources of excessive heat. Make sure applications are dry and well ventilated. If SSRs must be installed in an environment subject to high temperatures or poor ventilation, or if SSRs are mounted collectively, reduce the load current so that it does not approach the ambient temperature-load current recommendation. (See the Temperature Derating Curves on the following page.) When SSRs are used with inductive loads, suppress the inrush current to half of the peak surge current. Heat Sinks Heat sinks are recommended for 10, 25, 50, 75, and 90 amp rated solid state relays depending on ambient temperature and mounting position. The recommended heat sink dimensions and material are shown in the table: Output Rating Relays E Dimensions Material 10A 12" x 12" x 1/8" Aluminum (black anodized) 25A 12" x 12" x 1/8" (DC/AC) Aluminum (black anodized) 25A 15" x 15" x 1/8" (AC/AC) Aluminum (black anodized) 50A 15" x 15" x 1/8" Aluminum (black anodized) 75A 17" x 17" x 1/8" Aluminum (black anodized) 90A 17" x 17" x 1/8" Aluminum (black anodized) Using a thermal compound between the base of the SSR and the heat sink for heat dissipation is recommended. Wiring Locate SSRs as far from motor leads as possible to prevent malfunction from induced current. Use shielded wires for input leads when they are exposed to a source of induced current. Mounting Provide sufficient ventilation. Use #6 - 32 screws, flat washers, and lock washers to secure mounting on heat sinks. Vertical mounting is recommended to allow air to flow unimpeded. Horizontal or inverted mounting is possible, but the SSR must be derated according to the derating curves on the following page. Additional Information Do not exceed the load voltage and current specifications. A small-capacity load may not turn off due to the leakage current present after the SSR has turned off. If this is the case, use a resistor in parallel with the load to shunt the leakage current. Observe the polarity of input terminals. Failure to do so may cause damage to the SSR. When the SSR output is subjected to a higher than rated voltage, a varistor or other element should be connected to the output terminals to absorb the over-voltage. When the input signal contains a ripple voltage, the lowest ripple amplitude should exceed the minimum pick-up voltage of 4V. Over 4V 0V E-38 Lowest Voltage www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC Relays RSS Series Temperature Derating Curves: RSS Series 25 ir it-Free Air 30 40 20 50 60 70 80 90 100 k Free A 10 Amp Un 50 Amp Heatsink 50 in ink ts p Unit- ats 60 ea H 25 Am 5 He 75 Amp Mounted on H ea ts in k on 10 k sin at He 10 Amp 80 ed on 15 90 Amp nt 20 100 ou M RMS On-State Current (Amps) Derating Curve 50-Amp, 75-Amp, and 90-Amp ed nt ou M RMS On-State Current (Amps) Derating Curve 10-Amp and 25-Amp 90 Amp Unit-Fre e Air 20 50 Amp-Free Air 20 30 40 70 80 90 100 50 60 Relays Relay Base Temp (C) Relay Base Temp (C) For information on heat sink size, refer to the Technical Notes on the previous page. RSS Dimensions 1.9" (48.26mm) RSS Series RSS-CVR (finger-safe cover) 8-32 Pan Head Screw Large Saddle Clamp 1.75" (44.5mm) 3+ -4 6-32 Pan Head Screw 2.4" (6.96mm) 2 1.88" (47.6mm) 1.7" (43.2mm) 2.25" (57.2mm) 1 2.65" (67.31mm) o0.187" (4.5mm) 1.1" (27.9mm) 0.2" (4.8mm) 1.0" (25.4mm) Small Saddle Clamp 0.09" (2.3mm) 0.95" (24.1mm) R 0.265" (6.7mm) 1.075" (27.31mm) 0.79" (20.07mm) 0.5" (12.70mm) 0.37" (9.40mm) Material: Polycarbonate-Clear All dimensions in mm. www.idec.com E USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC E-39