Most Requested

Most Requested
Ranked by the number of enquiries we received in the last 30 days. A high count usually means the part is failing in the field or going out of support — worth stocking before you need it.
Showing 37 - 48 of 104 products
1 2 3 4 5 6 7 8 9
  • 1785-L11B
    Allen-Bradley
    In Stock
    1785-L11B
    Rack 3 defines the remote-chassis boundary for 1785-L11B, the compact PLC-5/11 controller with one configurable DH+/Remote I/O channel.
  • 1785-KE
    Allen-Bradley
    In Stock
    1785-KE
    Allen-Bradley 1785-KE is a 1771-rack interface that connects a programmable RS-232-C device to an Allen-Bradley Data Highway Plus network.
  • 1785-L80C15
    Allen-Bradley
    In Stock
    1785-L80C15
    Allen-Bradley 1785-L80C15 is a 100 K-word ControlNet 1.5 PLC-5/80C15 processor supporting 128 map entries, ninety-two devices, and redundant media.
  • F 8621A
    HIMA
    In Stock
    F 8621A
    HIMA F 8621A is an H51q coprocessor module with a 10 MHz processor, 384 KB static memory, dual isolated RS-485 interfaces and dual-port RAM.
  • IS215VPROH1BD
    General Electric
    In Stock
    IS215VPROH1BD
    The General Electric IS215VPROH1BD VPRO Emergency Turbine Protection Board provides independent overspeed and emergency-stop protection in Mark VI systems.
  • SPIIT13
    ABB
    In Stock
    SPIIT13
    ABB SPIIT13 is an INFI-NET local transfer module that facilitates communication between two local Cnet networks.
  • 3511
    Invensys
    In Stock
    3511
    Schneider Electric Triconex 3511 is an eight-channel high-accuracy pulse input module with a typical 25 ms update rate. It measures independent 20 Hz to 20 kHz differential sources.
  • 3510
    Invensys
    In Stock
    3510
    Invensys Triconex 3510 is a TMR pulse input module with eight non-commoned, AC-coupled differential channels for Tricon systems.
  • 3351
    Invensys
    In Stock
    3351
    Schneider Electric Triconex 3351 is a 32-point 4–20 mA analog input module with commoned field connections. It brings process transmitter signals into a Tricon safety system.
  • 3301
    Invensys
    In Stock
    3301
    3301 is a 32-point commoned 24 Vdc digital input module for Trident systems.
  • 3211
    Invensys
    In Stock
    3211
    Schneider Electric Triconex 3211 is a Trident communication module with engineering, TSAA, peer-to-peer and OPC UA services. It provides multiple network paths for controller integration.
  • 3201
    Invensys
    In Stock
    3201
    Schneider Electric Triconex 3201 is a Trident communication module for serial and Ethernet data exchange. It links the safety controller with TriStation, Modbus and supported plant-network services.
Showing 37 - 48 of 104 products
1 2 3 4 5 6 7 8 9

Why a part trends

This ranking comes from our own enquiry log, not from page views. When the same part number arrives from several unrelated plants in the same month, it is usually one of two things: a component reaching the end of its service life across an installed base, or a system that has just gone out of manufacturer support.

Either way it is a signal worth acting on. Parts that trend here tend to get harder to find over the following quarters, and prices move with scarcity rather than with a list.

If something you run appears on this page, it is worth holding a spare now. Ask your account manager to review your installed base against this list — we do it free for existing customers.