Vickers | ST1025011
ST1025011
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The ST1025011 pressure switch is produced by Vickers for the Vickers Hydraulic Accessories series and serves as a control element in hydraulic automation circuits. Design number 11 distinguishes this model within the range. A usable pressure window of 500–5000 psi allows selection of trip points that match system requirements, while a maximum working pressure of 5075 psi guards against transient overloads. Setpoint tuning is performed with a screw and locknut so the chosen value stays fixed under vibration. Dual micro-switches supply two independent outputs, and the SPDT (COM, NO, NC) contact scheme supports either normally open or normally closed wiring. Each switch is rated for 15 A at 125/250/480 VAC and for 0.5 A at 125 VDC or 0.25 A at 250 VDC, enabling direct connection to a wide range of control devices.
A threaded connection mounts the switch directly into a pressure port, and the 1/4 in connection size matches common hydraulic fittings. The Y drain port vents fluid away from the sensing element to prevent pressure buildup behind the diaphragm. Proper bolt torque of 12–15 N·m secures the unit without damaging threads, and a 22.2 mm cable entry hole accommodates a standard gland for strain relief. The recommended fluid cleanliness of ISO 18/15 minimizes abrasive wear on internal parts. Overall weight is 3.0 kg, which simplifies handling during installation and service.
Technical Specifications
Cable Entry Hole
22.2 mm
Connection Size
1/4 in
Design Number
11
Drain Port
Y Port
Max Working Pressure
5075 psi (35 MPa)
Micro-switch Rating (ac)
15 A at 125/250/480 VAC
Micro-switch Rating (dc)
0.5 A/125 VDC; 0.25 A/250 VDC
Mounting Bolt Torque
12–15 N·m
Mounting Type
Threaded Connection
Pressure Range
500–5000 psi
Recommended Fluid Cleanliness
ISO 18/15
Setpoint Adjustment
Screw and Locknut
Switch Configuration
Dual Micro-Switches
Switch Type
SPDT (COM, NO, NC)
Weight
3.0 kg
1620 Old Apex Road
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