Overview
The 5SP9406-7KC47 is a Siemens 5SP9-series miniature circuit breaker, 4-pole, C-curve, rated 6 A at 400 V AC with a 50 kA breaking capacity per IEC 947-2. It is designed for standard mounting rail and screw fixing, rated IP20, and weighs 929 g.
Function & operation
The breaker is sealable and carries a shock rating of 150 m/s² at 11 ms half-sine. It operates across -40 °C to 75 °C and accepts tunnel terminals top and bottom.
Applications
As a 4-pole C-curve MCB, the 5SP9406-7KC47 is used in distribution boards and sub-distribution panels for three-phase branch circuit protection in commercial and industrial installations. Typical loads include motor starters, HVAC equipment, and general power outlets where moderate inrush is expected.
Lifecycle & availability
The 5SP9406-7KC47 was discontinued by Siemens as of 2020-07-30. No official successor order code is listed in the available documentation. For a replacement, evaluate a current Siemens 5SY or 5SL series MCB with matching pole count, C-curve, and 6 A rating — confirm physical fit and breaking capacity before ordering.