Skip to main content

BESS Inverter Connectors for Reliable Energy Storage Designs

Battery energy storage system (BESS) inverters require high-power connectors that can fit into tight spaces while reliably withstanding heat and vibrations. Space-saving, rugged connectors from Molex deliver strong retention and low contact resistance, ensuring stable connectivity in demanding BESS inverter applications.

Optimizing Connectivity in BESS Inverter Designs


BESS inverters demand low-resistance, high-power connectors with robust high-voltage insulation and proper creepage and clearance spacing to guarantee system safety and performance. Rugged, sealed connectors engineered to endure heat, humidity and dust ingress are essential for long-term reliability. Connector materials must also withstand repeated thermal expansion and contraction cycles to maintain reliable electrical contact.

Engineers designing BESS inverters rely on compact, high-power connectors to support safe and efficient power delivery within confined spaces. Ruggedized connectors with robust environmental sealing help provide consistent performance in applications exposed to dust, humidity and vibration. Heat-resistant materials also help maintain dependable connectivity despite extreme thermal cycling.  

Space-saving, precision-engineered Molex connectors offer optimized contact geometry with robust high-voltage insulation to ensure reliable and safe power transmission in tight spaces. These connectors feature rugged housings, IP-rated sealing and secure locking mechanisms to deliver consistent performance in demanding BESS inverter applications. By incorporating heat-resistant materials, Molex connectors withstand extreme temperature fluctuations, enabling durable and stable connectivity in BESS inverters.

Inverter Control Board and Signal Interfaces for BESS


Control boards in BESS inverters rely on miniature, high-reliability connectors to manage signal transmission between tightly packed PCBs. Molex high-density connectors incorporate strong locking mechanisms to guarantee reliable signal transmission in compact BESS inverter control boards.

  Configuration Pitch  Current (max.) Wire Gauge Circuits
Micro-Fit Connectors Wire-to-board, board-to-board 3.00mm 10.5A 30 to 18 AWG 2 to 24
C-Grid and C-Grid III Connectors Wire-to-board, board-to-board 2.54mm 3.0A 36 to 22 AWG 1 to 100
Sabre Connectors Wire-to-board, wire-to-wire 7.50mm 18.0A 24 to 14 AWG 2 to 8

FFC/FPC Connectors

Flat flexible cable/flexible printed circuit (FFC/FPC) connectors facilitate efficient routing of power and signal lines in space-constrained BESS inverter layouts while maintaining reliable performance under harsh operating conditions.

Inverter High-Voltage Power Input Connections for BESS


High-voltage power input connections within BESS inverters must safely and efficiently carry large current loads under harsh operating conditions. Rugged Molex connectors provide low-resistance, high-current connectivity solutions for power input interfaces in BESS inverters. Key features include terminal position assurance (TPA) to prevent terminal backout in high-vibration environments and connector position assurance (CPA) for secure, long-term reliability.

  Configuration Pitch Current (max.) Voltage (max.) Wire Gauge Circuits
Sabre Connectors

Wire-to-board, wire-to-wire

7.50mm

18.0A

600V

24 to 14 AWG

2 to 8

Mega-Fit Connectors

Wire-to-board

5.70mm

30.0A

600V

16 to 10 AWG

2 to 12

Inverter Power Module Interconnects for BESS


Power modules within BESS inverters require reliable, space-saving connectivity solutions for routing low-to-mid-power lines. Compact and high-current connectors from Molex offer dual-row interfaces with secure locking mechanisms to facilitate efficient energy transfer between boards in DC-AC conversion.

  Configuration Pitch Current (max.) Wire Gauge Circuits Locking
Micro-Fit Connectors

Wire-to-board, board-to-board

3.00mm

10.5A

30 to 18 AWG

2 to 24

Friction lock

Sabre Connectors

Wire-to-board, wire-to-wire

7.50mm

18.0A

24 to 14 AWG

2 to 8

Positive lock

Busbars

Molex busbars enhance power delivery efficiency and minimize resistance for high-current connections in BESS inverter power modules, maximizing power delivery efficiency. Built for performance, these compact busbars use copper or aluminum components with optional plating to ensure consistent reliability in demanding BESS inverter applications.

Inverter AC Output Power Connections for BESS


AC outputs in BESS inverters require compact, high-current connectors that perform safely and reliably in space-constrained, high-vibration environments. Compact Molex connectors offer ruggedized housing with secure mating to support high-current AC power delivery in demanding BESS inverter applications.

  Configuration Pitch Current (max.) Voltage (max.) Wire Gauge Circuits
Mega-Fit Connectors

Wire-to-board

5.70mm

30.0A

600V

16 to 10 AWG

2 to 12

Sabre Connectors

Wire-to-board, wire-to-wire

7.50mm

18.0A

600V

24 to 14 AWG

2 to 8

Terminal Blocks and Barrier Strips

High-current terminal blocks and barrier strips from Molex offer reliable connectivity solutions for AC output lines in BESS inverters. These screw-secured components simplify field wiring, installation and maintenance while ensuring clear circuit separation for enhanced safety in inverter systems.

Inverter Sensor, Thermal and Safety Interfaces for BESS


Sensor and safety-system interfaces in BESS inverters require robust, space-efficient connections to ensure reliable signal integrity under vibration and spatial constraints. With robust locking mechanisms and fully isolated terminals, miniature, vibration-resistant Molex connectors offer high-integrity signal transmission for inverter sensor interfaces.

  Configuration Pitch Current (max.) Wire Gauge Circuits
Micro-One Connectors

Wire-to-board

2.00mm

4.0A

28 to 22 AWG

2 to 8

Nano-Fit Connectors

Wire-to-board, wire-to-wire

2.50mm

8.0A

26 to 20 AWG

2 to 16

Mini-SPOX Connectors

Wire-to-board 

2.50mm

3.0A

28 to 22 AWG

2 to 15

DuraClik Connectors

Wire-to-board 

2.00mm

3.0A

30 to 22 AWG

2 to 15

PicoBlade Connectors

Wire-to-board, wire-to-wire

1.25mm

2.5A

32 to 26 AWG

2 to 15

Custom Cable Assembly Solutions

Molex custom cable assemblies provide application-optimized connectivity solutions for various power levels in BESS inverters. With available power-matched conductor sizing, overmolding, sealing and connector integration, these assemblies deliver ready-to-install, high-performance options for all BESS inverter subsystems.