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Miniature Adjustable Current Switches NSA-ADJ-MINI

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Miniature Adjustable Current Switches NSA-ADJ-MINI Carrier Current (Power and Control) Air Conditioner Sensor


Part Numbers

NSA-A/MCS-A
NSA-A/MSCS-A

The Miniature Adjustable Current switches are designed for use in any AC current monitoring application in which you are looking for an adjustable current switch to monitor normal operating conditions, equipment failure or preventative maintenance scheduling for a particular piece of equipment. The adjustable current switches should be installed on the line side of the power to the motor, pump, compressor or other equipment. The miniature adjustable current switches are available in both solid and split-core versions in a smaller enclosure style than that of the NSA-A/ACS2 and NSA-A/ASCS2 Series adjustable current switches. The solid-core versions are a great choice for new installations or OEM applications in which cost sensitivity, lower trip points and environmental issues may be of concern.

Applications

Overload Conditions, Under Load Conditions, Normal Load Conditions, Broken Belts, Belt Slippage, Locked Rotors, Electrical Failure, Load Status, Local Alarms such as Strobes/Audible Alarms, Pumps, Fans, Compressors, Lighting Status and Usage Information, Ovens, Process Control, Industrial Equipment, Equipment Maintenance, OEM
 

Monitored Current Type: AC Current
Maximum Working Voltage: 600 VAC
Core Style: NSA-A/MCS-A: Solid | NSA-A/MSCS-A: Split
Operating Frequency Range: 50/60 Hz
Sensor Power: Induced from the Monitored Conductor (Insulated Conductors only)
Amperage Range: Max Sensing Current Voltage: 600 VAC | Max Continuous Current: 158 A
Max Current for 6 Seconds: 204 A | Max Current for 1 Second: 600 A
Isolation Voltage: 2200 VAC
Output Switch Rating: 1.00 Amp @ 36 VAC/VDC
Trip Point Style | Trip Point: Adjustable Trip Point
NSA-A/MCS-A: 0.32 – 150 A
NSA-A/MSCS-A: 0.70 - 150 A
Hysteresis: 10% Trip Point, typical
Contact Type: Normally Open (N/O)
Contact Rating: 1A Continuous @ 36 VAC/VDC
Contact “On” Resistance | “O” Resistance: < 0.5 Ohms (tripped) | > 1 Meg Ohms (Open)
Response Time: NSA-A/MCS-A: < 90 mS, typical | NSA-A/MSCS-A: < 45 mS typical
Status LED Indication1: Red LED (Current above trip point) | Blue LED (Current below trip point)
Aperture Size (Diameter): 0.53” (13.46 mm)
Operating Temperature Range: -22 to 140ºF (-30 to 60ºC)
Operating Humidity Range: 0 to 95%, non-condensing
Recommended Storage Temperature | RH Range: 41 to 95°F (5 to 35°C) | 40% to 85% RH, non-condensing
Enclosure Material | Flammability Rating: PC/ABS (Polycarbonate/ABS Blend) | UL94-V0
Wiring Connections: 2 Position, Screw Terminal Block (Not 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 (Relays, Contactors, Transformers)
Agency Approvals2: UL/CUL US Listed (UL 916) Energy Management Equipment (File # E334792), CE, RoHS2, WEEE
Product Weight: NSA-A/MCS-A: 0.15 lbs. (0.068 kg) | NSA-A/MSCS-A: 0.20 lbs. (0.091 kg)
Product Dimensions (L x W x H): NSA-A/MCS-A (Solid-Core): 2.510” (63.82 mm) x 0.940” (23.94 mm) x 2.000” (50.80 mm)
NSA-A/MSCS-A (Split-Core): 2.650” (67.19 mm) x 0.940” (23.94 mm) x 2.380” (60.49 mm)
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