Type 1 surge arrester 3EB series

for substationsfor railway applicationsfor harsh environments

Product overview Siemens railway surge arresters provide dedicated overvoltage protection for traction substations, overhead lines, cabling and rail vehicles. They divert transient overvoltages caused by lightning, switching operations or system disturbances away from sensitive equipment using nonlinear surge elements housed in silicone and composite structures.

Key benefits

• Compliance with international standards for proven safety and reliability in rail applications.
• Compact designs for straightforward installation and simplified maintenance.
• Durable materials and engineering for long service life and reduced downtime in harsh environments.
• Tailored variants to meet specific network topologies, vehicle types and operational requirements.

3EB4 silicone surge arrester in composite housing

• Design: Fiberglass-reinforced plastic (FRP) housing with silicone rubber sheds for environmental and mechanical resistance.
• Voltage: Suitable for AC systems up to 25 kV and DC systems up to 3 kV.
• Performance: Rated for train operations up to 420 km/h; rated short-circuit current 50 kA.
• Compliance: Tested to IEC 60099-4 (AC) and EN 50526-1 (DC).
• Safety: Fire and smoke tests to DIN EN 17084, DIN EN ISO 5659-2 and DIN EN 45545-2; shock and vibration tested per IEC 61373.
• Applications: High-speed, intercity, commuter, regional trains, multi-system locomotives and urban transport systems.

3EB5 silicone surge arrester with Cage Design™

• Design: Cage Design™ housing with directly molded silicone for improved hydrophobicity and shed performance.
• Voltage: Suitable for AC systems up to 25 kV and DC systems up to 3 kV.
• Performance: Rated for train operations up to 320 km/h; rated short-circuit current 50 kA.
• Compliance: Tested to IEC 60099-4 (AC) and EN 50526-1 (DC).
• Safety: Fire and smoke tests to DIN EN 17084, DIN EN ISO 5659-2 and DIN EN 45545-2; shock and vibration tested per IEC 61373.
• Applications: Intercity, commuter and regional trains, multi-system locomotives, urban transport and rail electrification.

Rail electrification DC types 3EB2 and 3EB3

• Design: Silicone-housed surge arresters specifically developed for DC traction systems.
• Classification: 3EB2 classified DC-B; 3EB3 classified DC-C with higher energy absorption capacity.
• Compliance: Tested to EN 50526-1 for DC network requirements.
• Safety: Fire and smoke tests to DIN EN 17084, DIN EN ISO 5659-2 and DIN EN 45545-2; shock and vibration tested per IEC 61373.
• Applications: Designed for urban transport, tramways, metro systems and DC rail electrification.

Materials and standards

• Main materials: Silicone rubber sheds and FRP (fiberglass-reinforced plastic) housings for mechanical strength and environmental resistance.
• Standards and tests: IEC 60099-4, EN 50526-1, DIN EN 17084, DIN EN ISO 5659-2, DIN EN 45545-2, IEC 61373.
• Range: Solutions for AC and DC railway applications; portfolio includes rated voltages up to 45 kV and tailored designs for specific use cases.

Technical specifications

• AC suitability: up to 25 kV (models such as 3EB4, 3EB5).
• DC suitability: up to 3 kV (3EB4, 3EB5) and dedicated DC types 3EB2 / 3EB3.
• Rated short-circuit current: 50 kA (3EB4, 3EB5).
• Train speed support: up to 420 km/h (3EB4) and up to 320 km/h (3EB5).
• DC classification: 3EB2 = DC-B; 3EB3 = DC-C (high energy absorption).
• Housing and sheds: FRP housings and silicone rubber sheds; Cage Design™ with molded silicone option.
• Fire and smoke: DIN EN 17084, DIN EN ISO 5659-2, DIN EN 45545-2.
• Mechanical tests: Shock and vibration to IEC 61373.
• Compliance: IEC 60099-4 (AC), EN 50526-1 (DC).