MK Sentry H6640S 4 Module Four Pole Pulsating DC Fault Current Sensitive Residual Current Device Type A RCD 40A 230V / 400V 30mA

MK Sentry H6640S Four Pole RCD – Type A, 40A, 30mA, 4 Module for 230V / 400V Applications

The MK Sentry H6640S is a 4 Module Four Pole Residual Current Device (RCD) rated at 40A with a 30mA trip sensitivity. Type A classification ensures detection of both alternating current (a.c.) and pulsating direct current (d.c.) earth faults, offering enhanced protection for electronic and mixed-load installations. Ideal for use in MK Sentry two- or four-module enclosures.

• Type A Sensitivity: Detects both a.c. and pulsating d.c. fault currents—suitable for modern equipment and appliances.
• Four Pole Design: Provides full isolation across three phases and neutral, making it ideal for three-phase or multi-phase systems.
• 30mA Tripping Current: Offers personal protection against electric shock and meets current safety regulations.
• Compliant Status Indication: Positive contact status display in accordance with 17th Edition IEE Wiring Regulations (537.2.2.2 and 537.3.2.2).
• Flexible Integration: Compatible with MK Sentry 2- or 4-module enclosures and suitable for 230V or 400V circuits.

Technical Specification

• Type: Type A RCD
• Current Rating: 40A
• Tripping Current: 30mA
• Poles: Four Pole
• Voltage: 230V / 400V
• Modules: 4
• Cable Capacity: Up to 50mm²
• Dimensions: 85 x 72 x 75mm
• Standard: BS EN 61008: 1995

✅ Use the MK Sentry H6640S RCD for high-integrity protection across three-phase systems and sensitive electronic loads with full compliance and safety assurance!