The Pylontech SC1000-100S (MPN: SC1000NA02V00201) is the dedicated Battery Management System (BMS) controller for the Pylontech PowerCube H1 and H2 high-voltage energy storage series. It occupies a single 3U slot in the PowerCube rack enclosure and manages a string of 5 to 15 H48074 (or H48050) battery modules connected in series, delivering system voltages from 200 V to 1,000 V DC at up to 100 A charge and discharge current. The SC1000-100S handles all charge and discharge control, cell voltage and temperature monitoring, active cell balancing, fault protection, and CAN / RS485 communication with the inverter. It includes both an internal power supply (drawing from the battery string itself) and two communication interfaces: a standard RS485/CAN inverter port and an RS232 console port (RJ45) for service and firmware use. A 6-bit ADD dial switch sets the string address for multi-string parallel installations. For systems using two or more parallel strings, an additional Pylontech MBMS1000 is required to aggregate BMS data across strings. Supplied with one 160 mm orange power cable and one 2 m black power cable. Certified CE, TüV. 15+ year design life; 10-year warranty.
200– 1,000V
DC operating range
100A
Max charge / discharge
5–15
Battery modules per string
3U
Rack mount (132mm)
RS485 + CAN
Dual protocol
15+ yrs
Design life
⚠ High-voltage DC system — qualified personnel only: A fully assembled PowerCube H1/H2 string controlled by this BMS operates at up to 1,000 V DC. Installation, wiring and commissioning must be performed by qualified and authorised electrical personnel only. This is a high-voltage DC system and poses a serious electrocution risk.
⚠ Inverter must have a soft-start function: The PowerCube H1/H2 system does not include a soft-start circuit. The connected inverter must have its own soft-start capability. Connecting to an inverter without soft-start risks equipment damage from the initial inrush current when the system powers on.
ℹ Multiple parallel strings require an MBMS1000: One SC1000-100S manages a single battery string (one rack). If your installation uses two or more parallel strings for higher capacity, each string needs its own SC1000-100S plus a separate Pylontech MBMS1000 master controller to aggregate communication across strings to the inverter.
What’s in the Box
SC1000-100S BMS Controller Unit
3U rack-mount controller. Slots into the top position of the PowerCube H1/H2 rack. Manages 5 – 15 series-connected H48074 or H48050 battery modules.
1 × Orange Power Cable (160 mm)
Short battery-to-BMS series power link. Connects the top battery module's positive terminal to the BMS power input within the rack.
1 × Black Power Cable (2,000 mm)
2-metre output cable from the BMS external power terminal to the inverter or DC disconnect switch. Length accommodates typical plant room distances.
Front Panel Interface Guide
Interface / Control
Function
External Power Terminal +/−
DC output to inverter / DC disconnect. Waterproofed Amphenol power connector.
Power Terminal +/−
Series connection to battery modules within the rack.
Power Switch
System-level ON/OFF for the BMS and high-voltage DC. Must be turned ON during normal operation.
RS485 / CAN Inverter Port
Communication to inverter (RS485 or CAN protocol). Primary interface for SOC, CVL, CCL, alarm and health data.
RS232 Console Port (RJ45)
Service-only port for Pylontech BatteryView software, diagnostics and firmware updates. Not for normal inverter communication.
Dry Contact Terminal
2 inputs, 4 outputs. For external alarm, grid-tied / off-grid mode switching or EMS integration.
ADD Switch (6-bit dial)
Bit 1 – 5: string address (01 – 31). Bit 6: enables 120 Ω CAN/RS485 termination resistor.
Reset Button
Long-press to restart the BMS without disconnecting power.
Status LEDs
RUN (green): normal operation. Alarm (yellow): warning condition. Protection (red): fault / protection triggered.
SOC Indicator LEDs
Displays approximate battery string state of charge in 25 % increments.
Key Features
200 V to 1,000 V DC Operating Range — 5 to 15 Modules
The SC1000-100S manages series strings from 5 to 15 H48074 (or H48050) modules, covering system voltages of 200 V to 1,000 V DC. This wide voltage window matches the input range of virtually all high-voltage hybrid inverters currently on the market — from entry-level residential HV inverters accepting 200 V through to commercial three-phase units accepting 800 V or beyond. For a PowerCube H2 system using H48074 modules (48 V per module), a 5-module string gives 240 V and a 12-module string gives 576 V.
200– 1,000V DC5–15 modulesH48074 and H48050
Three-Level BMS Architecture — Cell, String and Master Control
The SC1000-100S is the second tier (string level) in Pylontech’s three-tier BMS hierarchy. Each H48074 battery module contains its own cell-level BMS that monitors individual cell voltages and temperatures. The SC1000-100S aggregates this data across all modules in the string, applies protection logic, balances cells, and communicates with the inverter. For multi-string systems, the MBMS1000 sits above the SC1000-100S as the master controller, presenting a single communication interface to the inverter regardless of how many strings are installed.
Cell-level BMS (in each module)SC1000-100S (string level)MBMS1000 (multi-string)
RS485 and CAN Communication — Dual Protocol Inverter Interface
The SC1000-100S provides both RS485 and CAN bus communication interfaces to the inverter simultaneously. The BMS continuously transmits key parameters: state of charge (SOC), state of health (SOH), charge voltage limit (CVL), charge current limit (CCL), discharge current limit (DCL), individual cell voltages and temperatures, and fault/alarm codes. This real-time data stream allows the inverter to dynamically adapt its charge and discharge parameters to the battery’s actual condition, extending cycle life and preventing damage. The separate RS232 console port (RJ45) is for Pylontech BatteryView software, diagnostics and firmware updates — never for inverter communication.
RS485 and CANSOC / CVL / CCL / DCLRS232 console port (service only)
Comprehensive Protection Functions — Six Protection Categories
The SC1000-100S provides six categories of hardware and firmware protection: over-voltage and under-voltage (both at cell and string level); over-current on charge and discharge; over-temperature and under-temperature on charge and discharge; short-circuit protection; and reverse polarity protection. When any protection is triggered, the BMS opens the internal contactor, isolating the battery string from the inverter within milliseconds, and raises the corresponding alarm flag via the communication interface. The status LED changes from green (RUN) to red (Protection), and the dry contact output is activated for external alarm signalling.
Individual LFP cells in a series string naturally diverge in voltage and state of charge over time due to manufacturing tolerances and temperature gradients. Without balancing, the weakest cell becomes the limiting factor: it reaches cut-off voltage before the others, reducing usable capacity. The SC1000-100S monitors each module’s cell voltages through the inter-module communication links and coordinates active balancing to equalise cells during both charging and discharging. This maintains full capacity utilisation across the string and extends the overall cycle life of the battery bank.
Cell voltage monitoringActive balancingExtends cycle life
Dry Contact I/O — 2 Inputs, 4 Outputs
The SC1000-100S includes a dry contact terminal block providing 2 input and 4 output dry contact signals. These are used for external integration: output contacts can drive external alarm indicators, building management system (BMS/SCADA) inputs, or EMS control signals; input contacts can receive mode-change signals from external controllers (e.g., grid-tied to islanding transition signals). The dry contact I/O is particularly valuable in commercial and industrial installations where the battery system integrates with a wider building energy management system.
Internal Power Supply — No External Power Required
The SC1000-100S has an internal (self-powered) power supply that draws its operating power directly from the battery string itself. No separate 12 VDC or AC mains supply is required for the controller to operate. This simplifies installation compared to externally-powered BMS designs and ensures the BMS remains operational and monitoring the string even in conditions where external power is unavailable (for example, during a grid outage).
Internal power supplyNo external 12V/AC supply neededOperates during grid outage
6-Bit ADD Switch — String Address and Termination
The 6-bit DIP switch on the front panel serves two functions. Bits 1 – 5 set the string communication address (values 1 – 31), used when multiple SC1000-100S units communicate with an MBMS1000. Bit 6 enables or disables the built-in 120 Ω CAN/RS485 bus termination resistor: the termination resistor must be enabled on the last device in the communication chain to prevent signal reflections on the bus. For single-string installations, bit 6 is typically set to ON. For multi-string systems, only the last BMS in the chain should have bit 6 ON.
RS232 via RJ45 (BatteryView software, firmware updates)
Physical
Dimensions (W × D × H)
442 × 390 × 132 mm (3U rack)
Weight
8.5 kg
Protection class
IP20
Environmental
Operating temperature
−20 – +65°C
Storage temperature
−40 – +80°C
Compatible Battery Modules
H1 series
H48050 (2.4 kWh per module)
H2 series
H48074 (3.552 kWh per module)
Modules per string
5 to 15 modules
String voltage range
200 V – 1,000 V DC (depending on module count)
Front Panel I/O
Dry contact inputs
2
Dry contact outputs
4
ADD switch
6-bit (bits 1–5: address; bit 6: 120 Ω termination)
Status LEDs
RUN (green), Alarm (yellow), Protection (red)
Power switch
System-level ON/OFF (must remain ON during normal operation)
Reset button
Long-press restart (no power disconnection required)
Contents
Included cables
1 × 160 mm orange power cable; 1 × 2,000 mm black power cable
Warranty and Certification
Certifications
CE, TüV
Design life
15+ years
Warranty
10 years (standard PowerCube warranty)
Manufacturer
Pylontech (Pylon Technologies Co., Ltd.)
Frequently Asked Questions
What is the difference between the SC1000-100S and the SC0500-100S?
Both are Pylontech high-voltage BMS controllers, but they are for different battery modules: the SC0500-100S is for the PowerCube X1/X2 series, using H48050 (2.4 kWh) or H48074 modules in smaller configurations. The SC1000-100S is for the PowerCube H1 and H2 series and supports up to 15 modules per string at up to 1,000 V DC. They are not interchangeable — always check the PowerCube product documentation for your specific battery model and module count to confirm which BMS is required.
Is the SC1000-100S-V2 the same as the SC1000-100S?
The SC1000-100S-V2 is an upgraded version that adds Wi-Fi, USB and LAN connectivity, plus a built-in soft-start circuit (which the original SC1000-100S lacks). With the V2, the requirement for the inverter to have its own soft-start is removed. The V2 also eliminates the need for a separate MBMS unit in some multi-string configurations. If you are designing a new system, check whether the SC1000-100S-V2 is available, as the V2 simplifies installation for multi-string setups.
Do I need one SC1000-100S per rack, or per system?
One per rack / per string. Each series string of H48074 (or H48050) modules needs its own SC1000-100S controller. If you have two racks in parallel, you need two SC1000-100S units. In that scenario, you also need a Pylontech MBMS1000 sitting above both, which aggregates the data from both BMS units and presents a single communication interface to the inverter.
Why does the inverter need a soft-start function?
When a high-voltage DC battery bank is first connected to an inverter, the inverter’s internal DC link capacitors are initially uncharged. Connecting a high-voltage battery to uncharged capacitors causes a very large inrush current spike that can damage the battery BMS contactors, blow protection fuses, or damage the inverter. A soft-start circuit in the inverter pre-charges the DC link capacitors through a current-limiting resistor before closing the main contactor, limiting the inrush to a safe level. The SC1000-100S-V2 has a built-in soft-start; the original SC1000-100S does not, so the connected inverter must have this function.
What communication protocol does the SC1000-100S use to talk to the inverter?
The SC1000-100S supports both RS485 and CAN bus simultaneously. Which protocol your inverter uses depends on its make and model. Most modern high-voltage hybrid inverters use CAN bus for battery communication (it is faster and more robust for real-time BMS data); RS485 is also widely supported. Consult your inverter’s battery communication documentation and the Pylontech inverter compatibility list to confirm the correct cable wiring and protocol settings. The RS232 console port on the BMS is for service use only (Pylontech BatteryView software, diagnostics, firmware updates) — never connect the inverter communication cable to this port.
How do I set the ADD switch for a single-string installation?
For a single-string installation (one rack, one SC1000-100S, no MBMS): set bits 1 – 5 to address 1 (bit 1 ON, bits 2 – 5 OFF). Set bit 6 to ON to enable the 120 Ω termination resistor on the communication bus. For multi-string installations with an MBMS1000: each SC1000-100S receives a unique address (1, 2, 3…). Only the last BMS in the communication chain has bit 6 set to ON; all others have bit 6 OFF. Always follow the Pylontech PowerCube-H1/H2 installation manual ADD switch section for the exact configuration for your specific topology.
Related Products
Pylontech PowerCube H2 H48074 Battery Module
3.552 kWh / 48V LFP module — this BMS manages 5–15 of these
Pylontech MBMS1000 Master Controller
Required when running two or more parallel strings with SC1000-100S units
Pylontech SC1000-100S-V2 BMS Controller
Upgraded version with Wi-Fi, LAN, USB and built-in soft-start function
Pylontech PowerCube H2 Complete System Kit
Pre-configured H2 system with BMS, rack, modules and cables
BTU & WATT Calculator
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