NSA-A/CS2
NSA-A/SCS2
NSA-A/SCS2-L
The Carrier Fixed “Status” Current switches are designed for use in any AC current monitoring application in which you are looking for a “Go/No Go” or On/Off status for a particular piece of equipment. The current switches should be installed on the line side of the power to the motor, pump, compressor or other equipment. The current switches are available in both solid and split-core versions which also includes a Patented 35 mm Din Rail mounting foot for easy installation in panel mount applications. 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.
Note: The Fixed Current Switches are not intended to be used in Life / Safety applications or in Hazardous / Classified locations.
Pump Status, Fan Status, Compressors, Motor Status, Ovens, Industrial Equipment, Lighting Status and Usage, Electrical Load Status, Local Alarms (Strobes and Audible Alarms)
| Monitored Current Type: | AC Current |
| Maximum Working Voltage: | 600 VAC |
| Core Style: | NSA-A/CS2: Solid | NSA-A/SCS2: Solid | NSA-A/SCS2-L: Split |
| Operating Frequency Range: | 40 to 1 kHz |
| Sensor Power: | Induced from the Monitored Conductor |
| Amperage Range: | NSA-A/CS2: 0-250A | NSA-A/SCS2: 0-200A | NSA-A/SCS2-L: 0-200A |
| Isolation Voltage: | 2200 VAC |
| Trip Point Style | Trip Point: |
Fixed NSA-A/CS2: 0.25A or less | NSA-A/SCS2: 1.5A or less NSA-A/SCS2-L: 1.5A or less |
| Contact Type: | Normally Open (N/O) |
| “Status” Contact Rating: | 0.2A @ 200 VAC/VDC |
| “Status” Contact “On” Resistance | “O” Resistance: | < 10 Ohms (tripped) | > 1 Meg Ohms (Open) |
| Response Time: | See Response Time Table |
| Status LED Indication1: | Red LED (Monitored current is above Trip Point) |
| Aperture Size: | 0.75” (19.05 mm) |
| Din Rail Size: | 35 mm (U.S. Patent No. 7,416,421) |
| Operating Temperature Range: | 5 to 104ºF (-15 to 40ºC) |
| 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 Approvals: |
UL/CUL US Listed (UL 508) Ind. Control Equipment (File # E309723), CE, RoHS2, WEEE |
| Product Weight: |
NSA-A/CS2: 0.216 lbs (0.099kg) | NSA-A/SCS2: 0.270 lbs (0.123 kg) NSA-A/SCS2-L: 0.280 lbs. (0.127 kg) |
| Product Dimensions (L x W x H): |
Solid Core: 2.760” (70.11mm) x 3.343” (84.92mm) x 1.050” (26.67mm) Split Core: 2.780” (70.51mm) x 3.238” (82.25mm) x 1.120” (28.45mm) |
| Model # | 0.15 Amps | 0.20 Amps | 0.25 Amps | 0.50 Amps | 0.75 Amps | 1.0 Amps | 1.2 Amps | 1.5 Amps | 10 Amps | 20 Amps |
| NSA-A/CS2 | 156mS | 100mS | 84mS | - | - | 32mS | - | - | 26mS | 24mS |
| NSA-A/SCS2 | - | - | - | 484mS | - | 72mS | - | 45mS | 26mS | 20mS |
| NSA-A/SCS2-L | - | 224mS | 144mS | 65mS | 47mS | 39mS | - | - | 25mS | 22mS |
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