27A1D0

**INTRINSICALLY SAFE CONTROLS** 

## Series 17 and 27 Intrinsically Safe Controls 

-  Cannot Ignite Flammable Materials 

-  Solid State Reliability 

-  Up to 470K Ohm/cm Sensitivity (Series 17) 

-  Internal Surge Suppression 

-  SPST Contacts (Series 17) 

-  SPDT Contacts (Series 27) 

-  Can Be Used for Single Level or Differential Service 

## Series 17 – FM Approved 

Series 17 is FM Approved for use in Class I or II, Division 1, Groups A-G hazardous atmospheres. SPST isolated contacts. Field adjustable sensitivity by use of external resistors. 

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## Series 27 – UL-CSA Approved 

Series 27 is UL approved for use in Class I, Groups A, B, C, D; Class II, Groups E, F, G; and Class III hazardous locations. SPDT output contacts. UL Pilot Duty rated. 

|CSA Certified for Class 1, Groups A, B, C and D; Class II, Groups E, F and G; Class III<br>Specifications<br>**Contact Design**<br>**Series 17**<br>1 N.O. & 1 N.C. Isolated Contacts<br>**Series 27**<br>1 N.O. & 1 N.C.(1 form C)<br>**Contact Rating (24/120/240VAC) **8 ampResistive<br>**Mode of Operation**<br>Direct/Inverse,factoryset<br>**Sensitivity**<br>**Series 17**<br>0-470K ohm,field adjustable<br>~~Be~~<br>~~re~~<br>~~TO~~<br>~~OO~~|
|---|
|**Series 27**<br>0-100K ohm,factoryset|
|**Primary Voltage**|
|**Series 17**<br>24 VAC,120 VAC,240 VAC(+10%/-15%)50/60 Hz|
|**Series 27**<br>120 VAC,240 VAC(+10%/-15%)50/60Hz<br>**Secondary Voltage**<br>**Series 17**<br>13 VAC,4 mA<br>**Series 27**<br>11 VAC,2.3 mA<br>**Temperature**<br>-40°F to +150°F(-40°C to +65°C)<br>**Approvals**<br>**Series 17**<br>FM File # 1G9A1.AX<br>**Series 27**<br>U.L. 913 File # E44570;CSA #2174246<br>~~OO~~|
|**Connections**<br>All screw type connections|



## Applications 

- Hazardous Atmospheres 

- Pumps 

- Waste Treatment 

## Dimensions 

- Alarms 

- Sewage 

- CP Industry 

## How to Order 

Use the **Bold** characters from the chart below to construct a product code. 

**17 X X X X** Series e ~~s~~ **17** – FM Approved **27** – UL/CSA Approved Mode of Operation **A** – Direct **B** – Inverse Supply Voltage **1** – 120 VAC **2** – 240 VAC[1] **3** – 24 VAC[2] Sensitivity (ohms)[3] **D** – 3K **E** – 10K **G** – 100K **X** – (17 only)[3] Enclosure **0** – None **1** – NEMA 1 **4** – NEMA 4 

Notes: 

1. 240V standard in Series 17. Nonstandard, but available in Series 27. 

2. 24V available only in Series 17. 

3. Series 27 only. Series 17 includes a full set of resistors 

- (3.3K, 4.7K, 10K, 47K, 100K, 220K, 470K ohms) to allow modification of sensitivity in the field. Product code symbol in this position for Series 17 is “X.” 

**E-15** 

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