Electrical power supply connector BCC-Evo

plug-inDCsingle-pole

Product description
Stäubli BCC-Evo battery storage connectors provide a pluggable, high-reliability connection for stationary battery energy storage systems (BESS). Using proven MULTILAM contact technology, they maintain permanently low contact resistance and consistent electrical performance under real operating conditions, reducing energy loss, local overheating and system risk. The defined pluggable design simplifies installation, prevents incorrect mating and lowers assembly effort, supporting BESS bankability.

Highlights

• Low contact resistance — predictable performance over lifetime
• Proven MULTILAM contact technology — stable under real operating conditions
• Fast, error‑free installation — tool‑free pluggable design with coding
• Certified performance — supports standards compliance and reduces validation effort

Why does connection reliability matter in BESS?
Every connection point in a BESS affects system efficiency, thermal behaviour and operational safety. Conventional bolted or cable connections can degrade over time due to:

• Thermal expansion and contraction
• Vibration during operation
• Environmental influences such as humidity or contamination

Contact degradation increases resistance, which can lead to:

• Energy losses and reduced system efficiency
• Local overheating and fire/safety risks
• Higher maintenance effort and increased downtime

MULTILAM technology advantage
MULTILAM contact technology creates multiple contact points with uniform pressure across the interface, resulting in:

• Permanently low contact resistance
• Uniform current distribution
• Reduced thermal stress at the connection
• High tolerance to movement and vibration
• Improved overall energy efficiency

Designed for real BESS environments

• Continuous charge/discharge cycles
• High current loads and thermal stress
• Structural tolerances and mechanical displacement
• Indoor and outdoor installation conditions
• Optimised cost per kWh of battery capacity

Simplified installation and maintenance
The pluggable BCC-Evo replaces complex bolted connections and reduces assembly time. Defined connection and locking ensure a reliable mating state at all times.

• Installation advantages: fast and safe installation (pluggable), reduced assembly effort and time, no special tools required, fail‑safe mating with reverse polarity coding
• Operational advantages: reduced maintenance effort, easy service access, reduced downtime

Technical specifications

• Product: BCC-Evo
• Rated voltage: 1500 V DC
• Rated current (ΔT < 45K): 250 A, 300 A, 350 A (future 500 A)
• IP protection: IP67 mated / IP2X unmated
• Operating temperature: -40 … +125 °C
• Contact resistance: < 0.1 mΩ
• Short-circuit withstand: 5000 A / 1 s
• Certifications: TÜV, UL
• Flame class: UL94-V0