Built for overload and short-circuit protection, the Siemens 5SY4216-7 supplementary protector is part of the SENTRON 5SY4 series. This 2-pole device is rated 16A at 400VAC, 480VAC or 72VDC, with a C trip curve and 10kAIC interrupting rating at 400VAC. It mounts on a surface or DIN rail and uses fixed thermal and magnetic tripping. Approvals include UL, CSA and EN; standards include RoHS, REACh and WEEE.
How does the 16A rating relate to the trip operation?
The 16A rating is the rated current used for load selection. The thermal-magnetic trip responds to sustained overloads thermally and short-circuit currents magnetically. Both trip elements are fixed, so selection must match the load rather than rely on field adjustment.
How does the C trip curve affect load selection?
The C trip curve permits brief startup inrush before magnetic tripping. Consider the load's starting current and required fault response when selecting this curve.
Can the Siemens 5SY4216-7 be used for AC or DC applications?
The rated voltages are 400VAC, 480VAC and 72VDC. Select the voltage rating that matches the circuit's voltage and whether it operates on AC or DC.
How should I evaluate the 10kAIC interrupting rating?
The interrupting rating is 10kAIC at 400VAC. For a 400VAC application, compare this rating with the available fault current at the installation point and select protection with sufficient interrupting capacity.
What does the two-pole configuration mean for circuit selection?
This is a two-pole protector for single-phase applications. Choose the pole count according to the circuit conductors that require overcurrent protection.
What mounting methods and space requirements should I plan for?
The mounting methods are surface mounting and DIN rail mounting. Use the 3.62 in height, 3.62 in width and 3.3 in depth to plan the space occupied by the protector.
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