All connections arc as they come apart, it's just that the arc size is a function of the dielectric medium (air?), potential difference (voltage) and current. You design for "number of disconnects" and choose materials and power design so that the connector will survive as long as specified.
Apple MagSafe connectors are on the same voltage (20V) as these new Type C connectors, although Type C seems rated for a higher current (5A).
Looking at the pinout, the GND and VBUS are a bit longer, so will disconnect last upon removal. This may be to allow for the voltage to be dropped in anticipation of a disconnect, but you'd need enough intelligence at the power supply end to notice that. Lowering the voltage prior to disconnect would reduce the arc size.
Apple MagSafe connectors are on the same voltage (20V) as these new Type C connectors, although Type C seems rated for a higher current (5A).
Looking at the pinout, the GND and VBUS are a bit longer, so will disconnect last upon removal. This may be to allow for the voltage to be dropped in anticipation of a disconnect, but you'd need enough intelligence at the power supply end to notice that. Lowering the voltage prior to disconnect would reduce the arc size.