User Configurable Module Type 2 with Node Break (UCM-2NB)

Features and Benefits

  • Split Long Nodes into Two or More Shorter Rows
  • Customizable enclosures with convenient grid to align hardware
  • Seamlessly integrate switches, buttons, alarms and displays with other Chameleon control, data-acquisition, and networking modules for an enclosure-less automation solution
  • Fully Sealed Enclosure (NEMA 4X, 6, 13 Protection)
  • Made-to-order keypad text and graphics (add your own logo)
  • Modular architecture provides flexibility and expansion potential
  • Supports Hot Swapping

The UCM-2NB Node Break Module is a special version of the UCM-2 that incorporates connections that allow a node to be physically split into two nodes that operate as if they were one.  This is useful when a long node can not fit in the available horizontal space, but there is room in the vertical direction.  To split a long node, choose the separation point and add a UCM-2NB to the right-side of one split node and the left side of the other:

Long Node:

Split Node:

The UCM-2NB contains the same general functionality as the UCM-2 and allows adding custom buttons, switches, etc. with the exception that the UCM-2NB contains one set of connections with the cover (the UCM-2 has two sets of connections.)

Operating Ambient Temperature Range -40°C to 65°C
Storage/Transport Ambient Temperature Range -40°C to 85°C
High Impact Shock MIL-STD-901D, Grade A
Mechanical Vibration MIL-STD-167B, 0-50Hz
Facial/Housing Protection NEMA 1,2,4,4X,5,6,6P,12,12K,13
Terminal Board Connection Points 10 isolated connections (14-26 AWG)
Wiring Gland Access Points 2 glands for 0.24”-0.47” cables and2 glands for 0.2”-0.32” cables
Maximum Allowed Combined Continuous Current Through All I/O 20 Amps RMS
Electrical I/O to I/O Isolation 1240 VRMS for 1 minute
Maximum Allowed Continuous Current (any single I/O) 2.2 Amps RMS
Maximum Allowed Surge Current (any single I/O) 14.0 Amps RMS
Maximum Allowed Current During Hot-swap (any single I/O at 40% power factor) 4.4 Amps RMS
Maximum Separation Between Each End of Split Node 10 ft
Recommended Cable Type to Split Node Cat 5e
Supported Cable Diameters Two glands 0.24”-0.47”; two glands 0.16”-0.31”
Supported Wire Gauges

16-28 AWG

Weight 2 lbs
Front Panel Dimensions 2.5” W x 6” L
Enclosure Height 3″ H

The following part numbers can be used when ordering the User Configurable Module Type 2 with Node Break (UCM-2NB).

The following base module part numbers include the enclosure with EMI wiring glands, active board, and wiring hub:

Fairmount Part Number


UCM-2NB or 01012-011

Chameleon Half-Size User Configurable Module with Node Break Type-2NB

Spare/Replacement Parts:

Fairmount Part Number


11023-200 Chameleon User Configurable Module (UCM-2) Active Board and Full-Size Cover — Replacement faceplate for UCM-2, UCM-2NB
11038-100 Chameleon UCM Node Break Module (UCM-2NB) Wiring Hub Assembly — Replacement W/H for UCM-2NB

See the Selection and Ordering Guide for additional information.