MTL Safety Barrier TP48-3-N-NDI Surge Protection 20kA EN 61643-21

The MTL Safety Barrier TP48-3-N-NDI provides superior protection for 2, 3, and 4-wire field-mounted transmitters, exceeding standard transient protection options. This solution requires no additional wiring or conduit modifications.

• High-power solid state electronics with gas-filled discharge tube (20kA impulse capacity)
• 316 stainless steel housing for harsh environments
• Available with 1/2" NPT, 20mm ISO, or G1/2" (BSP 1/2 inch) threaded entries
• Working voltage: 35V dc maximum
• No resistance introduced into loop
• EMC compliance to Generic Immunity Standards (BS EN 61326-1 for industrial environments)
• Hazardous Area certified (Ex ia IIC T4, Ex d IIC T4)

• TP48-3: 3 flying leads (line1, line 2 & earth)
• TP48 3 Wire: 4 flying leads (+ve, -ve, signal & earth)
• TP48 4 Wire: 5 flying leads (+ve, -ve, signal +ve, signal -ve, earth)
• Wire size: 32/0.2 (1.0mm², 18 AWG)
• Lead length: 250mm (minimum)