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Outdoor Local Area Network Protector


  • Designed for the protection of up to two PoE-powered devices such as surveillance cameras, subscriber units, traffic lights, etc.
  • Weatherproof enclosure
  • Compact, in-line installation
  • High-speed capability
  • Low shunt capacitance to reduce signal loss
  • Enclosure meets UL® 497B rain test requirements


Part Number MWERJ451 MWERJ452
Number of Protectors 1 2
Clamping Voltage 60 VDC
Max Continuous Operating Voltage (Uc) 66 VDC
Peak Pulse Current 45 A 10/1000 μs
Nominal Discharge Current (In) 500 A 8/20 μs
Capacitance 15 pF Max
Connection Type RJ45
Temperature -40 to 176 °F
Enclosure Material UL® 94V-0 Thermoplastic
Knockout Sizes (4) 0.89"
(2) 1.12"
Depth (D) 3.52"
Height (H) 5.4"
Width (W) 8.72"
Unit Weight 1.43 lb 1.54 lb
Complies With IEC® 61643-21
ANSI®/IEEE® C62.41.2 Cat A

Pentair, CADDY, CADWELD, CRITEC, ERICO, ERIFLEX, ERITECH and LENTON are owned by Pentair or its global affiliates. All other trademarks are the property of their respective owners. Pentair reserves the right to change specifications without prior notice.

ANSI is a registered trademark of American National Standards Institute.
IEC is a registered trademark of the International Electrotechnical Commission.
IEEE is a registered trademark of The Institute of Electrical and Electronics Engineers, Inc.
UL, UR, cUL, cUR, cULus and cURus are registered certification marks of UL LLC.






3D Models