Skip to main content

Miniature Fixed Current Switches
NSA-FIXED-MINI

Part Numbers

NSA-A/MCS
NSA-A/MSCS

The Miniature Fixed Current Status Switches are designed for use in any AC current monitoring application with a fixed trip point to monitor the “Go/No Go” (On/Off) ”Status” for a piece of equipment. The fixed current switches should be installed on the line side of the power to the motor, pump, compressor or other equipment. All of the miniature current switches are available in both solid and split-core versions in a smaller enclosure style than that of the NSA-A/CS2-B and NSA-A/SCS2-B Series fixed current switches rated for higher operating currents.

Application

On/Off “Status” Indication, Local Alarms such as Strobes/Audible Alarms, Pumps, Fans, Compressors, Lighting Status and Usage Information, Ovens, Process Control, Industrial Equipment, OEM Opportunities

Monitored Current Type: AC Current
Maximum Working Voltage: 600 VAC
Core Style: NSA-A/MCS: Solid | NSA-A/MSCS: Split
Operating Frequency Range: 50/60 Hz
Sensor Power: Induced from the Monitored Conductor (Insulated Conductors only)
Amperage Range: 0 to 150A
Isolation Voltage: 2200 VAC
Trip Point Style | Trip Point: Fixed Trip Point
NSA-A/MCS: 0.20A or less | NSA-A/MSCS: 0.55A or less
Contact Type: Normally Open (N/O)
Status Contact Rating: 0.5A Continuous @ 36 VAC/VDC
Status Contact “On” Resistance | “O” Resistance: < 0.5 Ohms (tripped) | > 1 Meg Ohms (Open)
Response Time: NSA-A/MCS: < 50 mS typical | NSA-A/MSCS: < 40 mS typical
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 Approvals1: UL/CUL US Listed (UL 916) Energy Management Equipment (File # E334792), CE, RoHS2, WEEE
Product Weight: NSA-A/MCS: 0.15 lbs (0.068 kg) | NSA-A/MSCS: 0.20 lbs (0.091 kg)
Product Dimensions (L x W x H): NSA-A/MCS: 2.510” (63.82mm) x 0.940” (23.94mm) x 2.000” (50.80mm)
NSA-A/MSCS: 2.650” (67.19mm) x 0.940” (23.94mm) x 2.380” (60.49mm)

1Maximum wire length not to exceed 98.4 Feet (30 meters) in order to meet the CE Requirements.

Monitored Current Type: AC Current
Maximum Working Voltage: 600 VAC
Core Style: NSA-A/MCS: Solid | NSA-A/MSCS: Split
Operating Frequency Range: 50/60 Hz
Sensor Power: Induced from the Monitored Conductor (Insulated Conductors only)
Amperage Range: 0 to 150A
Isolation Voltage: 2200 VAC
Trip Point Style | Trip Point: Fixed Trip Point
NSA-A/MCS: 0.20A or less | NSA-A/MSCS: 0.55A or less
Contact Type: Normally Open (N/O)
Status Contact Rating: 0.5A Continuous @ 36 VAC/VDC
Status Contact “On” Resistance | “O” Resistance: < 0.5 Ohms (tripped) | > 1 Meg Ohms (Open)
Response Time: NSA-A/MCS: < 50 mS typical | NSA-A/MSCS: < 40 mS typical
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 Approvals1: UL/CUL US Listed (UL 916) Energy Management Equipment (File # E334792), CE, RoHS2, WEEE
Product Weight: NSA-A/MCS: 0.15 lbs (0.068 kg) | NSA-A/MSCS: 0.20 lbs (0.091 kg)
Product Dimensions (L x W x H): NSA-A/MCS: 2.510” (63.82mm) x 0.940” (23.94mm) x 2.000” (50.80mm)
NSA-A/MSCS: 2.650” (67.19mm) x 0.940” (23.94mm) x 2.380” (60.49mm)

1Maximum wire length not to exceed 98.4 Feet (30 meters) in order to meet the CE Requirements.

California residents please see Proposition 65