Siemens 3VA9214-0RS20 SENTRON RCD510 Type A 4P 250A 30mA-5A for 3VA1

The Siemens 3VA9214-0RS20 is a SENTRON RCD510 basic residual current protection module, Type A, designed for side-mounted assembly with 3VA1 molded-case circuit breakers (e.g. 3VA12 Frame 250). It provides 4-pole earth-fault protection rated for 250 A operational current at 127-480 V AC, with selectable residual current thresholds from 30 mA to 5 A and selectable trip delay from 0 to 3000 ms. Includes 30% pre-alarm indication, sealable selectors, and switchable RCD-or-monitoring mode.

Technical specifications:

• Order number (MLFB): 3VA9214-0RS20
• Manufacturer: Siemens
• Product line: SENTRON
• Product type: Residual current protection module, Type A
• Series: RCD510 basic
• Compatible circuit breakers: 3VA1 with terminal connection (e.g. 3VA12 Frame 250)
• Mounting: Side mounted, screw fixing
• Number of poles: 4
• Operational current (Ie): 250 A AC
• Supply voltage (Ue): 127-480 V AC
• Operating frequency: 50/60 Hz (rated max 60 Hz)
• Fault current frequency range: 50-60 Hz
• Adjustable rated residual current (IΔn): 0.03 / 0.05 / 0.1 / 0.3 / 0.5 / 1 / 3 / 5 A
• Adjustable non-tripping time (tv): 0 / 0.06 / 0.15 / 0.3 / 0.5 / 1.0 / 2.0 / 3.0 s
• Pre-alarm indication: Yes, at 30% of IΔn setting
• Selectable RCD or monitoring mode: Yes
• Electrical trip indicator: Yes
• Sealable selectors: Yes
• Infeed position on RCD module: Top or bottom
• Remote tripping: No
• Communication function: No
• IP protection (front): IP40
• Dimensions (H × W × D): 228 × 170 × 70 mm
• Net weight: 1.516 kg
• Ambient temperature during operation: -25 to +70 °C
• Storage temperature: -40 to +80 °C
• Approvals: General Product Approval, EMC, Maritime application, type test, environmental confirmations, dangerous-goods transport information
• EAN/GTIN: 4042949002277

Features and benefits:

• Type A residual current detection - covers pulsating DC fault currents in addition to AC, suitable for modern loads with rectifiers/inverters
• Wide adjustable thresholds 30 mA to 5 A - allows tuning from personal-protection to fire-protection use cases on the same hardware
• Adjustable time delay 0-3 s - selective coordination with downstream RCDs to prevent nuisance tripping
• 30% pre-alarm indication - early warning of insulation degradation before actual trip
• Switchable RCD/monitoring mode - run as a true breaker OR as a monitoring-only relay for fault recording without tripping
• Side-mounted: doesn't increase the breaker footprint depth; preserves panel layout
• Sealable settings - prevent unauthorized tampering with trip thresholds
• Maritime approval - usable on shipboard and offshore distribution

Applications:

• Earth-fault protection on 3VA1 Frame 250 main and feeder circuit breakers in industrial and commercial distribution boards
• Final distribution circuits requiring 30 mA personal protection (additional protection per IEC 60364-4-41)
• Fire prevention applications using 300-500 mA threshold settings
• Selective TT/TN-S systems requiring time-delayed S-type residual current protection
• Plants with frequency converters and rectifier loads where Type A detection is required
• Maritime and shipboard switchboards with earth-fault monitoring requirements

Also known as: Siemens 3VA9214-0RS20, SENTRON RCD510 basic Type A 4P 250A, 3VA1 residual current module 30mA-5A, side-mounted RCD for 3VA12.