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Siemens 5SU1356-7KK40 Specifications, Features & Compatibility Guide
✓ Who Should Buy
- • performance suitable for residential spaces.
- •Verified efficiency of standard rating for reduced long-term operational costs.
- •Structural stability for consistent cleaning under rigorous use cases.
- •Hardware durability via premium components and advanced technology.
- •Built-in grid protection with Standard power cycle voltage management.
✕ Who Should Avoid
- •Spaces or usage requirements exceeding residential rated capacity.
- •Installations prioritizing minimum capital expenditure over high-efficiency performance.
- •Unstable grid conditions exceeding the functional threshold of Standard power cycle.
- •Environments incompatible with electrical safety devices physical and thermal dissipation specs.
Product Overview
The Siemens 5SU1356-7KK40 is a 40A, 30mA Type A RCBO engineered for high-reliability residential final circuit protection. This 2P (1P+N) device integrates earth leakage, overload, and short-circuit protection into a compact 36mm width housing. Made in Germany, it serves as the primary safety barrier for household electrical systems operating at 230V.
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Verified Stabilizer & Electrical Safety professionals for installation, repair and servicing.
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NSR ELECTRICALS AND BUILDING SOLUTIONS
20 yrs experience
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Engineering Analysis
The 30mA sensitivity is vital for life safety, tripping in ≤40ms at 5x rated residual current to prevent cardiac arrest. Its 6kA breaking capacity and 10kA conditional short circuit rating ensure the unit can safely interrupt high-energy faults common in modern residential distribution boards. With a C-trip curve, it allows for temporary current inrushes from appliances while maintaining instantaneous tripping during genuine faults.
Technical Support & FAQs
Engineering Analysis
The 30mA sensitivity is vital for life safety, tripping in ≤40ms at 5x rated residual current to prevent cardiac arrest. Its 6kA breaking capacity and 10kA conditional short circuit rating ensure the unit can safely interrupt high-energy faults common in modern residential distribution boards. With a C-trip curve, it allows for temporary current inrushes from appliances while maintaining instantaneous tripping during genuine faults.