ACI MSCTA-40 Analog Current Sensors Instruction Manual

: September 27, 2024
: ACI

Table of Contents

MSCTA-40 Analog Current Sensors
Specifications:
Product Usage Instructions:
1. Installation:
2. Applications:
3. Warranty:
- Frequently Asked Questions (FAQ):
Q: What is the warranty period for the MSCT Current
Q: What are the available output options for the MSCT Analog
Q: What is the maximum monitored current range for the MSCT

MSCTA-40 Analog Current Sensors

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Specifications:

Monitored Current Type: AC Current
Maximum AC Voltage: 600 VAC
Isolation Voltage: 2200 VAC
Operating Frequency Range: 50/60 Hz
Core Style: Split-Core
Supply Voltage (MSCTA-40):
- +8.5 to 30 VDC (Reverse Polarity Protected)
- 250 Ohm Load (1-5 VDC): +13.5 to 30 VDC
- 500 Ohm Load (2-10 VDC): +18.5 to 30 VDC
Supply Current (MSCTA-40): 25 mA minimum
Supply Voltage (MSCTE-40): Induced from the Monitored Conductor
(Insulated Conductors only)
Maximum Load Resistance at 24 VDC (MSCTA-40): 775 Ohms
Sensor Amperage Range: 40 A
Output Signal:
- MSCTA-40: 4 to 20 mA (2-Wire, Loop Powered)
- MSCTE-40: 0-5 VDC
Response Time:
- MSCTA-40: < 600 mS (Rise and Fall Times)
- MSCTE-40: < 300 mS (Rise and Fall Times)
Aperture Size (Diameter): 0.20″ (5.0 mm) x 0.49″ (12.5 mm)
Wire Size: Fits 10 AWG to 14 AWG THHN Insulated Wire
DIN Rail Size: 35 mm
Operating Conditions: 10% to 95% RH, non-condensing
Enclosure Material | Flammability Rating: 1PC/ABS
(Polycarbonate/ABS Blend) | UL94-V0

Product Usage Instructions:

1. Installation:

The MSCT current sensors can be installed as follows:

Secure the sensor to the monitored cable using a cable tie and
the integrated cable tie anchor feature of the housing.
Use the attachable mounting foot to mount the unit in any
position using one Tek screw or snap it directly on a 35 mm DIN
rail.

2. Applications:

The MSCT current sensors are suitable for various applications
including Load Trending, Single Speed Loads, Pumps, Compressors,
Fans, Preventative Maintenance, LEED, Project Justification
(Calculating ROI), and Process Control.

3. Warranty:

The MSCT Current Sensors are covered by ACI’s Five (5) Year
Limited Warranty. Refer to ACI’s Sensors & Transmitters catalog
or their website for more details.

Frequently Asked Questions (FAQ):

Q: What is the warranty period for the MSCT Current

Sensors?

A: The MSCT Current Sensors are covered by a Five (5) Year
Limited Warranty provided by ACI.

Q: What are the available output options for the MSCT Analog

Current Sensors?

A: The MSCTA-40 offers a 4-20 mA loop powered output, while the
MSCTE-40 offers a 0-5 VDC output.

Q: What is the maximum monitored current range for the MSCT

current sensors?

A: The MSCT current sensors can monitor up to 40 A of
current.

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MSCTA-40 & MSCTE-40 Series
Analog Output Current Sensor

· MSCTA-40 offers 4 to 20 mA output MSCTE-40 offers 0 to 5 VDC output
· Split-core variant available for all MSCT current sensors
· 0 to 40 amperage sensor range
· Easy installation; DIN rail mountable
The MSCT Analog Current Sensors are designed for use in any AC current monitoring application in which you are looking to monitor a piece of equipment for proper operation.
Accuracy With the steady decrease in operating currents on today’s equipment, the MSCT Series current sensors have the industry’s highest accuracy. This enables you to better monitor the current used in your applications, as well as make better maintenance decisions to ensure your systems run as efficiently as possible.
Output The MSCTA-40 is offered in a 2 wire 4-20 mA loop powered output. The MSCTE-40 is offered in a 0-5 VDC output. The MSCT current sensors are available in a split-core version and can monitor up to 40 A.
Design The MSCT current sensors use an “Average” current measuring method and should be used in applications where a pure Sinusoidal AC waveform that has very little or no distortion/noise on the conductor being monitored. Applications may include monitoring a resistive type load such as an incandescent light bulb or heating element as well as any single speed linear load. For best results, the MSCT current sensors should not be used in applications with switching power supplies or variable speed drives due to the limited operating frequency range.
Installation The MSCT current sensors can be secured to the monitored cable using a cable tie and the integrated cable tie anchor feature of the housing. The MSCT also comes with an attachable mounting foot that allows the unit to be mounted in any position using one Tek screw or snapped directly on a 35 mm DIN rail.
Applications Applications include Load Trending, Single Speed Loads, Pumps, Compressors, Fans, Preventative Maintenance, LEED, Project Justification (Calculating ROI), Process Control.
Warranty The MSCT Current Sensors are covered by ACI’s Five (5) Year Limited Warranty. The warranty can be found in the front of ACI’s Sensors & Transmitters catalog, as well as on ACI’s website workaci.com.

Specifications Monitored Current Type: AC Current Maximum AC Voltage: 600 VAC Isolation Voltage: 2200 VAC Operating Frequency Range: 50/60 Hz Core Style: Split-Core Supply Voltage (MSCTA-40):
+8.5 to 30 VDC (Reverse Polarity Protected)
250 Ohm Load (1-5 VDC): +13.5 to 30 VDC
500 Ohm Load (2-10 VDC): +18.5 to 30 VDC Supply Current (MSCTA-40): 25 mA minimum Supply Voltage (MSCTE-40): Induced from the Monitored
Conductor (Insulated Conductors only) Maximum Load Resistance at 24 VDC (MSCTA-40): 775
Ohms (Formula : [24 VDC – 8.5 VDC] / 0.020 A) Sensor Amperage Range: 40 A Output Signal: MSCTA-40: 4 to 20 mA (2-Wire, Loop
Powered)
MSCTE-40: 0-5 VDC Response Time:
MSCTA-40: < 600 mS (Rise and Fall Times)
MSCTE-40: < 300 mS (Rise and Fall Times) Aperture Size (Diameter) 0.20″ (5.0 mm) x 0.49″ (12.5 mm) Wire Size: Fits 10 AWG to 14 AWG THHN Insulated Wire
DIN Rail Size: 35 mm
Environmental Operating Temperature Range¹: MSCTA: -22 to 140 ºF (-30 to
60 ºC) MSCTE: -22 to 122 ºF (-30 to 50 ºC) Operating Humidity Range: 10 to 95 %, non-condensing Storage Temperature | Range: -40 to 158 °F (-40 to 70 °C) |
10 % to 95 % RH, non-condensing Enclosure Material | Flammability Rating: 1PC/ABS
(Polycarbonate/ABS Blend) | UL94-V0 Wiring Connections: 2 Position Screw Terminal Block
(Polarity Sensitive) Wire Size: 16 to 22 AWG (1.31 mm2 to 0.33 mm2) Copper
Wires Only

Terminal Block Torque Rating: 4.43 to 5.31 in-lbs. (0.5 to 0.6 Nm)
Minimum Mounting Distance: 1″ (2.6 cm) between current switch & other magnetic devices (Relays, Contactors, Transformers)
Mechanical Dimensions: 1.93″ (48.99 mm) x 1.31″ (33.17 mm) x 2.18″
(55.37 mm) Weight: 0.165 lbs. (0.075 Kg)

Certification
UL/CUL US Listed (UL 508) Ind. Control Equipment (File # E309723), CE, RoHS, UKCA, FCC, CAN ICES-3 / NMB-3

1. Maximum 40 °C for 50 Hz operation of MSCTE

Accuracy Specifications

MSCTA-40 MSCTE-40

Accuracy ±0.75 % FS (±0.3 A) ±0.75 % FS (±0.3 A) ±0.4 % FS (±0.16 A) ±0.75 % FS (±0.3 A) ±0.75 % FS (±0.3 A)

Current Greater than 2 A Greater than 2 A
Full Range Full Range Full Range

Operating Temperature 5 to 140 °F (-15 to 60 °C) 32 to 140 °F (0 to 60 °C) 5 to 95 °F (-15 to 35 °C) -22 to 122 °F (-30 to 50 °C) -22 to 86 °F (-30 to 30 °C)

Frequency 60 Hz 50 Hz 60 Hz 60 Hz 50 Hz

Dimensional Drawing

Mounting Foot

5.0mm 0.20in 12.5mm 0.49in

Side View
Standard Ordering
Model Number A/MSCTA-40 A/MSCTE-40

Description 151890 151889

Front View
AMP Range 0-40 A 0-40 A

Output Signal 4 to 20 mA 0 to 5 VDC

The MSCT Current Sensors are not intended to be used in Life / Safety Applications or in Hazardous / Classified locations (environments).

Accessories Ordering

Item Number 100307
100306

Description
249 Ohm, 1/4 W, ±1 % Tolerance, 50 PPM Resistor (Only Needed to Convert to 1-5 VDC)
249 Ohm, 1/4 W, ±0.1 % Tolerance, 50 PPM Resistor (Recommended for Best Accuracy) (Only Needed to Convert to 1-5 VDC)

100469

499 Ohm, 1 W, ±1 % Tolerance, 50 PPM Resistor (Only Needed to Convert to 2-10 VDC)

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