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Miniature Adjustable Current Switches

 

Installation and Operation

 

 

 

#NSA-A/MCS-A, NSA-A/MSCS-A 

– 11/14/2019 

 

Specifications subject to change without notice. 

Catalog No. 11-808-762-01 

Page 

2

 of 

5

 

Minimum Mounting Distance: 

1” (2.6 cm) between current switch (Relays, Contactors, Transformers) 

Agency Approvals

2

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)

 

1

The LED should not be used to determine if current is present. At low currents the LED may not be visible. 

2

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

 

 

Dimensional Drawing 

 

Solid-Core 

 

 

 

 

Split-Core 

 

 

 

 

Front View 

Right View 

Bottom View 

Figure 1 

 

 

 

Summary of Contents for NSA-A/MCS-A

Page 1: ...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 Part Numbers NSA A MCS A NSA A MSCS A Specifications Monitored Current Type AC Current Maximum AC Voltage 600 VAC Operat...

Page 2: ...34792 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 1 The LED should not be used to determine if current is present At low currents the LED may not be visible 2 Maximum wire length n...

Page 3: ... are familiar with codes standards and proper safety procedures for high voltage installations should attempt installation The current switches will not require external power since the power for the current switch is induced from the conductor being monitored The NSA A MCS A and NSA A MSCS A Current Switches should be used on Insulated Conductors Only The current switch may be mounted in any posi...

Page 4: ... controller 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 so as to prevent any chance of shorting The current switch output terminals represent a solid state switch for controlling both AC ...

Page 5: ...LED just turns on and stop immediately The adjustable current switch is now tripped Now verify the output with an Ohmmeter to verify that the contacts of the switch are approximately 0 200 Ohms The adjustable current switch Hysteresis Dead Band is typically 10 of the trip point Troubleshooting Problem Solution Red LED is on but the current switch didn t activate Disconnect the wires from the curre...

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