BCC-Evo ensures safe, efficient and predictable BESS operation.

Battery energy storage systems rely on stable connections to maintain performance, safety, and efficiency over decades. Yet connection degradation remains a critical and often underestimated and hidden risk, leading to energy losses, overheating and fire, and reduced system reliability.

Stäubli’s BCC-Evo battery storage connectors eliminate this risk. Using proven MULTILAM technology, they ensure permanently low contact resistance and stable electrical performance under real operating conditions.

The pluggable design simplifies installation, prevents incorrect mating, and reduces assembly errors. The result is a reliable connection solution that minimizes system risk and supports the bankability of BESS assets.

Let’s optimize your BESS system together. 

By improving efficiency, reducing maintenance effort, and simplifying integration, Stäubli BCC-Evo connectors contribute directly to a lower total cost of ownership. 

Highlights

Low contact resistance

Predictable performance over lifetime

Proven MULTILAM contact technology

Stable performance under real operating conditions

Fast and error-free installation

Prevents incorrect mating and reduces assembly risk

Proven and certified performance

Supports standards compliance and reduces validation effort

In battery energy storage systems, every connection point directly impacts system efficiency, thermal behavior, and operational safety. Conventional bolted or cable-based connections can degrade over time due to:

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

This degradation increases contact resistance, leading to:

  • Energy losses and reduced system efficiency
  • Localized overheating and safety / fire risks
  • Increased maintenance effort and downtime

Stäubli BCC-Evo battery storage connectors are designed to eliminate these risks by maintaining stable contact conditions throughout the entire system lifetime.

At the core of BCC-Evo solution is the MULTILAM contact technology. It creates multiple contact points with consistent pressure across the interface.

This results in:

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

Unlike traditional contacts, MULTILAM ensures stable electrical performance under real operating conditions, not just at initial installation. This prevents losses and guarantees maximum energy efficiency of BESS systems.

Stäubli BCC-Evo connectors are engineered for the demanding conditions of stationary energy storage systems:

  • Continuous charge and discharge cycles
  • High current loads and thermal stress
  • Structural tolerances
  • Indoor and outdoor installation environments
  • Low costs per kWh battery capacity

The robust design ensures reliable performance across these conditions, contributing to long-term system stability and safety.

The pluggable design of the BCC-Evo connector replaces complex bolted connections and reduces assembly effort. Its defined connection and locking design ensures a reliable and secure mating state at all times.

  • Installation advantages
  • Fast and safe installation (pluggable design)
  • Reduced assembly effort and time
  • No special tools required
  • Failsafe mating (with reverse polarity protection) because of coding

Operational advantages

  • Reduced maintenance effort
  • Easy access for service
  • Reduced downtime

This way BCC-Evo connectors enables more efficient system integration and reduces overall lifecycle costs (TCO).

Technical Specifications

 BCC-Evo
Rated voltage1500 V DC
Rated current (ΔT < 45K)250 A, 300 A, 350 A (in future 500 A)
IP protectionIP67 mated / IP2X unmated
Operating temperature-40 … +125 °C
Contact resistance< 0.1 mΩ
Short-circuit withstand5000 A / 1 s
CertificationsTÜV, UL
Flame classUL94-V0

Let`s optimize BESS together with reliable connections.

With our BCC-Evo portfolio of battery storage connections and proven MULTILAM technology, combined with our experience in demanding energy storage applications, we support you in creating stable, efficient, and low-risk connection solutions tailored to your system requirements.

Contact us