rss series relays e 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 ?ger-safe terminal cover (rss-cvr) input specifications 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) 4000 rms (min) capacitance (input to output) 8pf 8pf rev. voltage protection y es (?2vdc) n/a output specifications 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 minimum holding current 50ma 50ma 100ma 100ma 100ma 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/?ec commutating dv/t snubbed for 0.5 power factor at rated load weight 10g (approx.) rss series panel mount solid state relays ul recognized file no. e194577 10, 25, 50, 75, 90a current ratings 48v ac to 660v ac output ratings part numbers: rss series continuous output current 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 part numbers the ?ngersafe cover is part no. rss-cvr.
relays rss series e relays t ransformer loads t ransformer loads sometimes result in severe inrush current when the trans- former saturates during the ?st 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 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. recommended loads solenoid valves and contactors rss relays use high-noise immunity circuitry with a snubber to handle the electrical noise generated by inductive loads. recommended loads 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) ssr rating at 120v ac at 240v ac 2a 150va 300va 4a 200va 400va 10a 500va 1kva 25a 1kva 2kva 50a 2kva 4kva ssr rating at 120v ac at 240v ac 2a 250w 500w 4a 400w 800w 10a 1kw 2kw 25a 2kw 4kw 50a 3kw 6kw ssr rating at 120v ac at 240v ac 2a 250w 500w 4a 400w 800w 10a 900w 1,800w 25a 2,100w 4,200w 50a 3,800w 7,500w part number 120v 240v 480v 10a 1/2 3/4 3/4 25a 1/2 3/4 3/4 50a 3/4 1 1 / 2 1 1 / 2 75a 3/4 5 5 90a 3/4 5 5 recommended loads lamp loads zero voltage switching is ideal for driving incandescent lamps, since the cold ?ament will not be subjected to a large inrush current. using a zero-switched ssr will reduce inrush current and prolong lamp life. recommended loads internal circuit block diagram ssr rating at 120v ac at 240v ac 2a 2a 2a 4a 3a 3a 10a 1kw 2kw 25a 2kw 4kw 50a 3kw 6kw snubber trigger circuit ac input equivalent circuit 4 3 2 1 snubber trigger circuit dc input equivalent circuit 4 3 2 1
rss series relays e relays 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 collective ly, 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 mountin g position. the recommended heat sink dimensions and material are shown in the table: 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 suf?ient ventilation. use #6 ?32 screws, ?t washers, and lock washers to secure mounting on heat sinks. v ertical mounting is recommended to allow air to ?w unimpeded. horizontal or inverted mounting is possible, but the ssr must b e derated according to the der- ating curves on the following page. additional information do not exceed the load voltage and current speci?ations. 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, us e 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-volt- age. when the input signal contains a ripple voltage, the lowest ripple amplitude should exceed the minimum pick-up voltage of 4v. output rating 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) t echnical notes over 4v 0v lowest voltage
relays rss series e relays t emperature derating curves: rss series 80 20 30 40 50 60 70 90 100 25 20 15 10 5 10 amp mounted on heatsink heatsink 25 amp unit-free air 10 amp unit-free air derating curve 10-amp and 25-amp 80 20 30 40 50 60 70 90 100 100 80 60 50 20 90 amp mounted on heatsink 75 amp 50 amp heatsink 90 amp unit-free air 50 amp-free air derating curve 50-amp, 75-amp, and 90-amp relay base temp ( c) relay base temp ( c) rms on-state current (amps) rms on-state current (amps) mounted on heatsink f or information on heat sink size, refer to the technical notes on the previous page. material: polycarbonate-clear rss series rss dimensions 1.9" (48.26mm) 2.4" (6.96mm) 2.65" (67.31mm) 0.5" (12.70mm) 0.37" (9.40mm) 0.79" (20.07mm) 1.075" (27.31mm) 1 2 3+ -4 6-32 pan head screw small saddle clamp large saddle clamp 1.75" (44.5mm) 1.1" (27.9mm) 0.2" (4.8mm) 1.88" (47.6mm) 1.0" (25.4mm) 2.25" (57.2mm) 1.7" (43.2mm) 8-32 pan head screw ?.187" (4.5mm) r 0.265" (6.7mm) 0.09" (2.3mm) 0.95" (24.1mm) rss-cvr (finger-safe cover) all dimensions in mm.
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