Electric Actuator Series 70 Bray International https://www.bray.com/images/default-source/products/controls/s70/s70_sz30_01thumbnail.png?sfvrsn=84cd5fa0_4

Electric Actuator

Series 70

Output Torque
120/230V: 300 to 18,000 in-lb (34-2034 Nm)
24V: 600 in-lb (68 Nm)
2000 in-lb (226 Nm)
5000 in-lb (565 Nm)
120, 230 VAC 50/60 Hz, 1-phase
24V: AC/DC
Enclosure Ratings
NEMA 4, 4X and IP65, IP67


Electric Actuator - Series 70

Output Torque
120/230V: 300 to 18,000 in-lb (34-2034 Nm)
24V: 600 in-lb (68 Nm)
2000 in-lb (226 Nm)
5000 in-lb (565 Nm)
Control Options
On-Off: 120/230 VAC Interposing Relay Board (I.R.B.)
24V: AC/DC Controller
Modulating: Servo NXT Controller
Communication Protocols: Servo NXT DeviceNet, EtherNet/IP
120, 230 VAC 50/60 Hz, 1-phase
24V: AC/DC
Power Source
24-27VAC or 30-38VDC
70-DNS: VAC:120
70-NXT: 120/220 VAC 50/60Hz, 24V AC/DC
Enclosure Ratings
NEMA 4, 4X and IP65, IP67
Input Signal
On-Off: 120/230 VAC
24V: AC/DC
Modulating: 4-20 mA
0-10V, 0-5V, 2-10V
ISO 5211
120/230 VAC: Single phase, reversible, permanent split capacitor induction motor
24V: Permanent magnet-brush DC motor
Temperature Range
-20°F (-29°C) to 150°F (+65°)
Switch Options
2 SPDT mechanical switches standard
Additional auxiliary switches available (up to 6 total)
Optional torque switches available.
UL, CSA and CE approved (most models)
70-24V: CSA and CE approved
Valve Compatibility
Quarter Turn Valve

Features & Benefits

Output Torque 300 in-lb (34 Nm) to 18,000 in-lb (2,034 Nm)

Decades of Bray's proven success in electric actuation, combined with innovative engineering, has produced the Series 70 electric actuator. The Series 70 features on/off or modulating control and offers many advantages over other actuators including:

  • UL, CSA and CE certification of most units
  • Wiring directly to the terminal strip without interference from other components
  • Simple and unique manual override handwheel system
  • Lowest profile and lightest weight actuator on the market
  • Simple finger or screwdriver adjustment of travel limit cams without interference from other components
  • Highly visible valve status display on most units (Heartbeat)

Series 70 Design Features

Designed like a junction box, the Series 70 offers by far the easiest access to terminal block wiring, cam adjustments and switch installation. Therefore, the time required for field startup and adjustment is greatly reduced, and maintenance can be performed with assured ease and safety.
  • A. Enclosure

    The low profile weatherproof actuator is UL listed Type 4, 4x and IP65. Polyester powder coated die-cast aluminum cover and base, for exceptional corrosion, wear, impact and ultraviolet resistance.

  • B. High Visibility Position Indicator

    Prominently labeled and color coded yellow for open, red for close – the display indicates valve position through the full range of travel. The O ring sealed dome is made of high impact, heat, chemical and ultraviolet resistant clear polycarbonate and designed to withstand caustic wash down ensuring excellent corrosion protection.

  • C. Captive Cover Bolts

    The cover is attached to the base by captive stainless-steel bolts placed outside the sealing area.

  • D. O-ring Seal for Watertight Enclosure

    The O-ring seal between the cover and base provides a weatherproof seal preventing internal corrosion.

  • E. Manual Override

    Standard on all models. The declutch-able manual override prevents handwheel movement during motor operation. When manual operation is desired, pull the handwheel out exposing a yellow stripe around the handwheel shaft. This indicates the handwheel is engaged and manual operation is available.

  • F. Manual Override Switch

    Interrupts power to the motor when handwheel operation is engaged. The manual override operates like a watch adjusting knob. To engage the manual override, simply pull the handwheel to its outermost position. A yellow stripe is revealed to visually indicate manual override engagement.

  • G. Conduit Entries

    Two connections in either NPT or metric threads. One entry is for power, the other for control wiring.

  • H. Motor Gear

    High torque start motor assembly. Designed for fast inspection and maintenance.

  • I. Output Drive

    Self-locking worm shaft and worm gear assembly holds the valve in desired position.

  • J. Mechanical Travel Stop Bolts

    Designed to prevent over-travel in the open or close direction during manual operation. Travel stop bolts include a locknut to prevent loosening, seals to prevent water ingress, and spacers to prevent adjustment between 0° and 90° limit switch settings. Travel stop bolts permit 5° of over travel.

  • K. Terminal Strip

    On standard models, the actuator limit switches are pre-wired to an easily accessible and clearly marked terminal strip for customer wiring. The terminal strip has been placed near the two conduit entries with ample room for running wire leads. An easily accessible green plated ground screw is provided. A wiring diagram is included inside the cover for easy reference.

  • L. Limit Switch Bracket

    Simple and secure design to firmly hold limit switch assemblies for accurate and repeatable valve position feedback.

  • M. Limit Switch Cams

    Bray’s patented CAM design includes standard green (open) and red (close) CAMs which are adjustable with finger touch or screwdriver with no additional tools. Standard factory setting allows 90° travel between open and close positions.

  • N. Roller Bearings

    Provides low friction while securely aligning actuator indicator shaft and CAMs for reliable valve position feedback.

  • O. Oldham Coupler

    Corrects any misalignment between the valve and actuator without introducing side load to the position indicator shaft assembly.

  • P. Interposing Relay Board (IRB)

    Available on 120/220 VAC 50/60Hz On/Off control versions, the IRB prevents back feeding of control from one actuator by another one wired in parallel.

  • Q. Servo-NXT

    • Modulating Controller: 120, 220, 1 phase 24 VDC
    • 24V On/Off Controller
    • See below for additional details



Series 70 - Ethernet/IP™

Bray's Series 70 electric actuators now offer expanded capabilities with Ethernet/IP connectivity built directly into the actuator.

  • Built-in Ethernet/IP Support

    Bray's Series 70 NXT is the first device with built in Ethernet/IP connectivity, allowing the device to connect directly to Rockwell PLC's over Ethernet.

  • Rockwell Studio 5000 Add-on Profile

    Bray is the first manufacturer to incorporate Rockwell’s Add-on Profile (AOP) for an EtherNet/IP capable actuator. This AOP enables customers to seamlessly register and quickly configure Bray S70 Actuators into Rockwell PLC’s via the Studio5000 software. As a result, customers automatically see I/O data with meaningful and descriptive names.

  • Quick Ethernet Connectivity

    The Servo NXT control module uses assembly data to set valve position and reports operational characteristicsby transmitting data over the EtherNet/IP protocol directly to the Rockwell/Allen-Bradley PLC for visualization and fault notifications. Another benefit is the device configuration data is stored in the Logix controller, enabling Automatic Device Configuration anytime the device is replaced.

  • Diagnostics & Reporting

    Series 70 Servo NXT Ethernet/IP™ control module provides feeback and diagnostics data over TCP/IP including position, status, alarms, stroke count, motor operating time, motor current, stroke times, directional changes and more, providing actionable increased diagnostics capability and predictive maintenance by detecting deterioration.

  • Heartbeat Health Monitor

    The Servo NXT control module provides real-time status and health via the built in backlit blinking Bray logo.

  • Exceptional Value

    Servo NXT Ethernet/IP reduces complexity during installation and commissioning of the Series 70 actuator. Connect the Series 70 Servo NXT directly by Ethernet, eliminating costly communication protocol converters and gateways. With the Add on Profile (AOP) from Rockwell, Series 70 Actuators can also be quickly configured into Rockwell PLC's via Rockwell Studio5000 software.

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