Voltage Output Analog Current Sensors
Installation and Operation
#NSA-A/SCTE2-50, NSA-A/SCTE2-150, NSA-A/SCTE2-250, NSA-A/SCTV2-50, NSA-A/SCTV2-150, NSA-A/SCTV2-250
11/14/2019
Specifications subject to change without notice.
Catalog No. 11-808-790-01
Page
4
of
5
NOTES
An extra jumper shunt is included. It can be discarded if not needed.
In applications where high vibrations are encountered, Carrier recommends to use the jumper shunt without tab. A
pliers can help with jumper shunt installation onto the pins.
DIN Rail Installation
Figure 3
Wiring Instructions
Figure 4
Carrier recommends the use of a two conductor 16 to 22 AWG shielded cable, copper wire only, for all Analog current
sensor installations. A maximum wire length of less than 30 meters (98.4 feet) should be used between the current
sensors and the Building Management System or controller. All wiring must comply with all local and National Electric
Codes.
NOTE
When using a shielded cable, be sure to connect only (1) end of the shield to ground at the controller. Connecting
both ends of the shield to ground may cause a ground loop.
When removing the shield from the sensor end, make sure to properly trim the shield to prevent any chance of shorting.
The current sensor terminals are polarity sensitive and represent a linear 0 to 5 or 0 to 10 VDC output signal. Tighten the
screws at the terminal block connections to the recommended torque of 0.5 to 0.6 Nm (4.43 to 5.31 in-lbs.). The aperture
(hole) size of the current sensor is 0.75” (1.90 cm).
