Schneider Electric MP500C-SRD : Spring Return Forta Actuator, Normally Closed, 24 VAC/DC, 113 lbf, Floating/0-10 VDC (4-20mA) Proportional, 60 or 300 Run Time @ Floating, 15 Second Run Time @ Proportional, 13 Second Spring Return, Terminal Block, NEMA 2 Enclosure