Product Detail Manual

: Pdf 60710-Attachment 60710-Attachment 000334 Batch12 unilog

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Relays & Sockets

Signaling Lights

Switches & Pilot Lights

RSS

RSS Series Panel Mount Solid State Relays
Key features:
•	 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
•	 High surge capability
•	 Optional fingersafe terminal cover (RSS-CVR)

Part Number Selection
Input

Timers

AC Input
90-280V AC

DC Input
4-32V DC

Specifications

Continuous
Output Current

Part Number

Series

10A

RSSAN-10A

25A

RSSAN-25A

50A

RSSAN-50A

75A

RSSAN-75A

90A

RSSAN-90A

10A

RSSDN-10A

25A

RSSDN-25A

50A

RSSDN-50A

Current (continuous)

10A

25A

50A

75A

90A

75A

RSSDN-75A

1-Cycle Surge Current

150A

300A

750A

1000A

1200A

90A

RSSDN-90A

1-Second Surge Current

Input Specifications

Relays & Sockets

UL Recognized
File No. E194577

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

Yes (–32VDC)

N/A

Output Specifications

Contactors

90 to 280V AC

30A

75A

150A

225A

300A

50mA

50mA

100mA

100mA

100mA

Voltage Drop at Rated Current

1.6V (maximum)

Voltage Range

48 - 660V AC

Output

Dual SCR (N.O.)

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/µsec

Commutating DV/DT

Snubbed for 0.5 power factor at rated load

Weight

10g (approx.)

Circuit Breakers

Terminal Blocks

RSSAN

4 to 32V DC

Minimum Holding Current

822 		

RSSDN

Voltage Range

www.IDEC.com

Relays & Sockets

RSS
Switches & Pilot Lights

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		
at 120V AC

at 240V AC

10A

500VA

1KVA

25A

1KVA

2KVA

50A

2KVA

4KVA

Signaling Lights

SSR Rating

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.
Relays & Sockets

Recommended Loads		
SSR Rating

at 120V AC

at 240V AC

10A

1KW

2KW

25A

2KW

4KW

50A

3KW

6KW

Solenoid Valves and Contactors
Timers

RSS relays use high-noise immunity circuitry with a built-in snubber to handle the electrical noise generated by inductive loads.

Recommended Loads		
at 120V AC

at 240V AC

10A

900W

1,800W

25A

2,100W

4,200W

50A

3,800W

7,500W

Contactors

SSR Rating

RSS series relays provide a highly reliable means of switching AC loads when applied properly. Read the technical notes on the following page prior to installing
solid state relays.

Terminal Blocks
Circuit Breakers

800-262-IDEC (4332) • USA & Canada

823

Relays & Sockets

Signaling Lights

Switches & Pilot Lights

RSS

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 1/2

1 1/2

75A

3/4

5

5

90A

3/4

5

5

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.

Relays & Sockets

Recommended Loads		
SSR Rating

at 120V AC

at 240V AC

10A

1KW

2KW

25A

2KW

4KW

50A

3KW

6KW

Circuit Breakers

Terminal Blocks

Contactors

Timers

Internal Circuit Block Diagram

824 		

www.IDEC.com

Relays & Sockets

RSS
Switches & Pilot Lights

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 are recommended for all solid state relays depending on ambient temperature and mounting position. The recommended heat sink dimensions and material are shown in the table:
Output Rating

Dimensions

Material

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)

Relays & Sockets

10A

Signaling Lights

Heat Sinks

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.
Timers

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.

Additional Information

Contactors

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.

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.

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.

Terminal Blocks

Observe the polarity of input terminals. Failure to do so may cause damage to the SSR.

Over 4V
Lowest Voltage
Circuit Breakers

0V

800-262-IDEC (4332) • USA & Canada

825

Relays & Sockets
Temperature Derating Curves: RSS Series

Ambient Temperature (°C)

75 AMP SCR OUTPUT

Load Current (Amperes)

Load Current (Amperes)

Ambient Temperature (°C)

Load Current (Amperes)

Terminal Blocks
Circuit Breakers

0.5°C/W
0.7°C/W
1.0°C/W
1.5°C/W

Ambient Temperature (°C)

90 AMP SCR OUTPUT

Ambient Temperature (°C)

826 		

1

Ambient Temperature (°C)

50 AMP SCR OUTPUT

Contactors

Timers

25 AMP SCR OUTPUT

Load Current (Amperes)

Load Current (Amperes)

10 AMP SCR OUTPUT

Relays & Sockets

Signaling Lights

Switches & Pilot Lights

RSS

www.IDEC.com

Relays & Sockets

RSS

8-32 Pan Head Screw
Large Saddle Clamp

1.9" (48.26mm)

1.75" (44.5mm)

ø0.187"
(4.5mm)

1.1" (27.9mm)

6-32 Pan Head Screw

3+

-4

0.2"
(4.8mm)

1.0" (25.4mm)

Relays & Sockets

Small Saddle Clamp

RSS-CVR - Optional Fingersafe Cover

R 0.265" (6.7mm)

0.95" (24.1mm)

1.075"
(27.31mm)

0.09" (2.3mm)

2.4" (6.96mm)

2.65" (67.31mm)

1.88" (47.6mm)

2
Signaling Lights

1.7" (43.2mm)

1
2.25" (57.2mm)

Switches & Pilot Lights

Dimensions (mm)

0.79"
(20.07mm)

0.5" (12.70mm)
0.37" (9.40mm)

Timers
Contactors
Terminal Blocks
Circuit Breakers

800-262-IDEC (4332) • USA & Canada

827



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