SSRT-240A25

Catalog 1308242 Issued 3-03 (PDF Rev. 03-16) 

**Potter & Brumfield** 

## **SSRT series** 

## **“Hockey Puck” Solid State Relay With Snubberless Triac Output** 

## cWAdus 

File E29244 

Users should thoroughly review the technical data before selecting a product part number. It is recommended that users also seek out the pertinent approvals files of the agencies/laboratories and review them to ensure the product meets the requirements for a given application. 

## **Features** 

- Standard “hockey puck” package. 

- Enhanced noise immunity (designed to meet level 3 requirements of European EMC Directive). 

- LED indicator. 

- Floating terminal design. 

- Low cost snubberless triac outputs. 

- 10A & 25A rms versions. 

- AC & DC input versions. 

- 4000V rms isolation. 

- New housing design with anti-rotation barriers 

## **Engineering Data** 

**Form:** 1 Form A (SPST-NO). **Duty:** Continuous. **Isolation:** 4000V rms minimum, input - output. **Capacitance:** 8.0 pf typical (input to output). **Temperature Range: Storage:** –40°C to +100°C **Operating Temperature:** –20°C to + 80°C **Case Material:** Plastic, UL rated 94V-0. **Case and Mounting:** Refer to outline dimension. **Termination:** Refer to outline dimension. **Approximate Weight:** 3.5 oz. (98g). 

**Ordering Information** 

> **Sample Part Number SSRT -240 D 10 1.  Basic Series:** SSRT = “hockey puck” triac output solid state relay **2.  Line Voltage:** 240 = 24 - 280 VAC **3.  Input Type & Voltage:** A = 90 - 280 VAC linear D = 3 - 32 VDC constant current **4.  Maximum Switching Rating:** 10 = .1 - 10A rms, mounted to heatsink 25 = .1 - 25A rms, mounted to heatsink ~~al~~ 

**Our authorized distributors are more likely to maintain the following items in stock for immediate delivery.** SSRT-240A10 SSRT-240D10 SSRT-240A25 SSRT-240D25 

## **Input Specifications** 

|**Parameter**|**AC Input**|**DC Input**|
|---|---|---|
||**Zero V Turn-on Units**|**Zero and Random V Turn-on Units**|
|Control Voltage Range V<br>IN|90 - 280VAC|3 - 32VDC|
|Must Operate Voltage V         (Min.)<br>IN(OP)|90VAC|3VDC|
|Must Release Voltage V          (Min.)<br>IN(REL)|10VAC|1VDC|
|Input Current (Max.)|15mA|15mA|



**Specifications and availability** www.tycoelectronics.com **subject to change.** Technical support: Refer to inside back cover. 

Dimensions are shown for **Dimensions are in inches 1102** reference purposes only. **over (millimeters) unless otherwise specified.** 

Catalog 1308242 Issued 3-03 (PDF Rev. 03-16) 

**Potter & Brumfield** 

## **Output Specification (@ 25°C, unless otherwise specified)** 

|**Parameter**|**Conditions**|**Units**|**SSRT-240A10**<br>**& SSRT-240D10**|**SSRT-240A25**<br>**& SSRT-240D25**|
|---|---|---|---|---|
|Load Voltage Range V<br>L||V rms|24 - 280||
|Repetitive Blocking Voltage (Min.)||Vpeak|+<br>-600||
|Load Current Range I *<br>L|Resistive|p<br>A rms|.1 - 10|.1 - 25|
|Single Cycle Surge Current (Min.)||Apeak|100|250|
|Leakage Current (Off-State) (Max.)|f  = 60 Hz. V  = Nom.<br>(120 or 240 V rms)<br>L|mA rms|.1||
|On-State Voltage Drop (Max.)|I  = Max.<br>L|V peak|1.5|1.3|
|Static dv/dt (Off-State) (Min.)||V/s|500||
|Thermal Resistance, Junction to Case<br>(R     ) (Max.)<br>θ<br>j-c||C/W|2.2|1.7|
|Turn-On Time (Max.)|f  = 60 Hz.|ms|8.3 for DC input types, 20 for AC input types||
|Turn-Off Time (Max.)|f  = 60 Hz.|ms|8.3 for DC input types, 30 for AC input types||
|I  t Rating<br>2|t  = 8.3 ms|A   Sec.<br>2|41|240|
|Load Power Factor Rating|I  = Max.<br>L||0.5 - 1.0||



*See Derating Curves 

## **Electrical Characteristics (Thermal Derating Curves)** 

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10A Units<br>**----- End of picture text -----**<br>


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25A Units<br>**----- End of picture text -----**<br>


## **Heatsink Recommendations** 

- We recommend that solid state relay modules be mounted to a heatsink sufficient to maintain the module’s base temperature at less than 85°C under worst case ambient temperature and load conditions. 

- The heatsink mounting surface should be a smooth (30-40 micro-inch finish), flat (30-40 micro-inch flatness across mating area), un-painted surface which is clean and free of oxidation. 

- An even coating of thermal compound (Dow Corning DC340 or equivalent) should be applied to both the heatsink and module mounting surfaces and spread to a uniform depth of .002” to eliminate all air pockets. 

- The module should be mounted to the heatsink using two#10 screws. 

## **Operating Diagrams** 

## **Outline Dimensions** 

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**----- Start of picture text -----**<br>
1.88 .89<br>[ 47.8 ] LED INDICATOR [ 22.6]<br>1.70 .13<br>[ 43.2 ] 8-32 TERMINAL & SCREWS [ 3.2 ]<br>(2 PLACES)<br>[ 25.4 ]1.00 r ABSoer [ 12.4 ].49 [ 27.9 ] | i mH l [ 44.5 ]1.75<br>.38<br>[ 9.5 ]<br>M ' A<br>L 2.25 _ g .19 [ 8.3 ].33 = [ 21.5 ].85<br>[4.9]<br>6 (2 PLACES)-32 TERMINAL & SCREWS MOUNTINGHOLE/SLOT  [ 23.3 ].92<br>1.10<br>[ 57.2 ]<br>**----- End of picture text -----**<br>


www.tycoelectronics.com Technical support: Refer to inside back cover. 

**Specifications and availability subject to change.** 

**Dimensions are in inches over (millimeters) unless otherwise specified.** 

Dimensions are shown for reference purposes only. 

**1103**