SCHNEIDER ComPacT NSX DC Circuit Breaker 100-1200 A and Isolating Switch 100-630 A

SCHNEIDER ComPacT NSX DC Circuit Breaker 100-1200 A and Isolating Switch 100-630 A

Product Overview

(1) Basic Information

Product Type Rated Current Maximum Voltage Core Parameters Applicable Scenarios

DC circuit breaker 100-1200 A 1500 Vdc (EP model) Icu=50 kA (1500 Vdc), Ics=20 kA (1500 Vdc) for distribution protection, photovoltaic, maritime

Isolation switch 100-630 A 1500 Vdc supports isolation function, with dedicated markings on the nameplate for circuit isolation and maintenance safety assurance

Standard compatibility: IEC 60947-2 (circuit breakers), IEC 60947-3 (isolating switches)

Environmental adaptability: working temperature -25 ° C~+70 ° C (debugging temperature -35 ° C), storage temperature -50 ° C~+85 ° C, anti vibration (2~100 Hz), electromagnetic interference compatible with IEC 60947-2 Appendix F/J

(2) Core classification

Classification dimensions, specific types, key characteristics

Operation mode: toggle the handle to open/close/reset locally, support padlock locking (5-8 mm padlock)

Rotating handle direct/extended, cabinet door interlock (MCC function), supports key lock

Manual/automatic mode switching of electric mechanism, supporting remote opening/closing/resetting

Installation type: Fixed direct fixed installation, compact structure

Plug in quick replacement, no need to touch the base connector, IP40 protection

Pull out support for connecting/exiting/removing three positions, auxiliary circuit can be tested

Universal release unit TM-D (1P/2P, fixed thermal magnetic protection), TM-DC (adjustable thermal/magnetic protection), TM-G (fixed electromagnetic protection)

Specialized TM-DC PV (photovoltaic 80-500 A), TM-DC EP (1500 Vdc 100-500 A)

Key components and functions

(1) Details of the release unit

Model: Suitable for circuit breaker thermal protection regulation, electromagnetic protection regulation, rated current range

TM-D 1P/2P (maximum 160 A) fixed (Ir=In) fixed (Ii=260-1250 A) 16-160 A

TM-DC 3P/4P (80-250 A), 2P (630-1200 A) adjustable (4-5 levels) 80-160 A fixed, adjustable 80-1200 A above 200 A

TM-DC PV 4P Photovoltaic Circuit Breaker Adjustable (4 levels) 80-160 A Fixed, 200-500 A Adjustable 80-500 A

TM-DC EP 4P 1500 Vdc Circuit Breaker Adjustable (4-speed) 100-250 A Fixed, 250-500 A Adjustable 100-500 A

(2) Communication and auxiliary equipment

Communication module: BSCM Modbus SL/ULP (LV434220), supports Modbus Serial Line/ULP dual protocol, can transmit OF/SDE/SD status, stores 10 event records

Auxiliary contacts: OF (open state), SD (trip indication), SDE (electrical fault indication), supporting wired/wireless transmission

Control accessories: MN undervoltage trip coil (0.35Un trip), MX shunt trip coil (0.7Un trip), delay unit (anti instantaneous power failure)

Cable and Hub: NSX Cable (connecting communication module), Insulated NSX Cable (≥ 480 Vdc scenario), Modbus SL Hub (LV434224, supporting 3 RJ45 ports)

(3) Software Tools

Core software: EcoStruxure Power Commission

Function: Device discovery, parameter configuration, firmware update, communication testing, report generation

Compatible devices: trip unit, BSCM module, wireless indicator auxiliary device, PowerTag gateway

Network security: supports changing default passwords, disabling unused ports, requires deployment of firewalls, and network segmentation protection

Operation and safety regulations

(1) Core operating procedures

Summary of Operation Type Steps and Key Precautions

Manual closing/opening: Switch the handle to the I (ON)/O (OFF) position; Electric: After sending the command to trip in Auto mode, the fault needs to be checked first before resetting

Press the Push to trip button during the trip test and observe the handle jump to the Trip position. Before testing, isolate downstream equipment to avoid accidental triggering

Locking the padlock/key lock in the O (OFF) or I (ON) position does not affect the fault release function

Insert horizontally into the base in the open state of plug-in installation, tighten 2 screws (2.5 N · m), and must be equipped with a terminal screen cover (IP40 protection)

Pull out disassembly switch → Unlock locking rod → Remove circuit breaker auxiliary circuit and manually disconnect (if any)

(2) Fault handling and maintenance

Release response:

SD instruction: Manual trip (Push to trip/MN/MX coil) → Check coil wiring and power supply

SD+SDE indication: Electrical fault (overload/short circuit) → Clean contacts, check cables, perform 5 no-load operations

Maintenance cycle:

Basic maintenance: visual inspection, functional testing (every 1-2 years)

Standard maintenance: insulation testing, connection fastening, and calibration of trip units (every 3 years)

Maintenance after short circuit: remove black smoke residue, check power connection, test mechanical operation

Specialized scenario configuration

(1) Photovoltaic applications

Specialized components: TM-DC PV trip unit, 4P circuit breaker (80-500 A), ground fault protection (insulation monitoring equipment)

Special requirements: Terminal screen cover+phase partition (mandatory for ≥ 500 Vdc), cable cross-section must comply with IEC 60947-1 standard

(2) 1500 Vdc High Voltage Application

Special model: TM-DC EP trip unit, 4P circuit breaker (100-500 A)

Limitations: Does not support plug-in base/pull-out, no communication function, only back wiring (100-250 A)