Motor Protection Electronics, Inc.
2464 Vulcan Rd.
Apopka, FL 32703
Phone: 407-299-3825 • Fax: 407-294-9435
Email: info@mpelectronics.com • Website: www.mpelectronics.com
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Item # LM Surge, Transducer Surge Arresters

The Transducer Surge Arrester, part number LM SURGE, shall be a Din-Rail Surge Arrestor that provides transducer protection of the 4-20 mA loop. The LM Surge shall be a thin packaged din-rail enclosed device, taking only minimal space within the control panel. The unit will be UL497B listed and have 4-20 mA protection.





Specifications  · Additional Description

Specifications

Degree of Protection
IP20

Underwriter's Laboratories (UL) Rating
UL497B

Atmosphere Explosible (ATEX) Approvals
DEKRA 12ATEX0254
X: II 3 G Ex nA IIC T4 Gc

International Electrotechnical Commission System for Certification to Standards Relating to Equipment for Use in Explosive Atmospheres (IECEx) Approvals
DEKRA 11ATEX0089
X: II 3 G Ex nA

Test Standards
EN61643-21
IEC 61643-21
UL497B

International Electrotechnical Commission (IEC61643-21) Test Category
C2
C3
D1

Safety Integrity Level (SIL) Classification
SIL2, SIL3

Nominal Voltage (UN)
24 V

Maximum Continuous Operating Direct Current (DC) Voltage (UC)
33 V

Grounding
Via Din-Rail

Series Impedance Per Line
1.8 O

Capacitance Line to Line
≤ 0.5 nF

Operating Temperature
-40 to +80 ºC

Conductors (Flexible)
14 to 28 AWG

DIN Rail Mounting Clip
35 mm

Terminal Torque
3.5 lb/in

Sensor Output Current
4 to 20 mA

Pin Size
1.1 ft
2.2 ft
3.3 ft
4.4 ft

Cable Conductor
14-28 AWG

Maximum Direct Current (DC) Voltage
33

Nominal Direct Current (DC) Voltage
24 V


Additional Description
The LM Surge product shall protect two 4-20mA signals, one signal protected via pins 1.1' and 2.2' and a second signal protected by pins 3.3' and 4.4'. The LM Surge product can be used in both standard and intrinsically safe applications. The LM Surge product is not an Intrinsically Safe Barrier, but shall be designed to provide surge protection for Zone 2 intrinsically safe applications.

The LM SURGE Arrester shall have a removable protection module that can be easily removed and replaced. The design shall contain "make before break" terminals that assure continuity of the 4-20mA signal in both the protected and unprotected state.

The LM SURGE product shall be UL497B rated, shall have a nominal rating of 24VDC, a maximum voltage rating of 33VDC, a series impedance of 1.8 ohms per line, and shall be able to accept conductor sizes 14-28 AWG.



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