The Bray Series 5B resin valve switch box provides position indication and electrical feedback for automated valves. It features a glass-fiber-reinforced PBT enclosure with IP66/67/68 and NEMA 4/4x protection ratings. The product complies with the VDI/VDE 3845 (NAMUR) mounting standard and can be configured with up to six mechanical or proximity switches, while supporting AS-I, Profibus DP, and DeviceNet communication. It is suitable for valve position monitoring in harsh environments, status acquisition in industrial control networks, and intrinsically safe circuit applications in hazardous areas.
Bray Series 5B Resin Valve Switch Box
Resin valve switch box supporting up to 6 switches and multiple communication protocols.
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Model confirmation
Confirm model, connection and key options before ordering.
After-sales support
After-sales communication support is provided according to the order agreement.
Specifications
- Protection Rating
- IP66/67/68, NEMA 4/4x
- Certifications
- CE, cULus (most models), SIL 3; optional ATEX, IECEx
- Communication Protocols
- AS-I, Profibus DP, DeviceNet
- Switch Types
- Mechanical: SPDT, DPDT; Proximity: PNP, NPN, 140V 2-wire, 250V 2-wire, reed, NAMUR intrinsically safe
- Number of Switches
- 6
- Mounting Standard
- VDI/VDE 3845 (NAMUR)
- Operating Temperature Range
- -25°C to 65°C (-13°F to 149°F)
- Conduit Entries
- 2x 3/4" NPT or M25 (both sides), 1x 1/2" NPT or M20 (rear)
- Enclosure Material
- Glass fiber-reinforced PBT
- Position Indicator
- Impact-resistant dome type; beacon colors: red/yellow, red/green, black/yellow, reversed red/green
Application scenarios
Automated Valve Position Feedback in Harsh Environments
Used for position status indication and electrical feedback of automated valves. Featuring IP66/67/68 and NEMA 4/4x protection ratings, along with a glass fiber-reinforced PBT enclosure, it is suitable for applications requiring moisture and water protection and resistance to harsh field environments.
Automated Valve Status Acquisition in Industrial Control Networks
Used in automated valve systems employing AS-I, Profibus DP, or DeviceNet communication protocols to acquire and transmit valve position status for centralized valve status monitoring.
Multi-Channel Valve Position and Interlock Signal Feedback
Used in automated valve assemblies requiring multi-channel valve status or interlock signal feedback. The product can be configured with up to 6 switches and supports SPDT, DPDT, PNP, NPN, reed, and other proximity switch options.
Intrinsically Safe Valve Position Monitoring in Hazardous Areas
Used for valve position monitoring applications in explosive hazardous areas employing intrinsically safe circuits. The product supports NAMUR intrinsically safe proximity switches and offers optional ATEX or IECEx certification; actual use must match the applicable model and site certification requirements.
Selection points
Position feedback configurations with up to 6 switches
This series of switch boxes can be configured with up to 6 switches for valve position indication and multi-channel status feedback selection.
Glass fiber-reinforced PBT resin enclosure
The switch box enclosure is made of glass fiber-reinforced PBT, providing a selection basis for applications requiring a resin housing material.
Multi-directional conduit entries and NAMUR mounting compatibility
The product provides two 3/4-inch NPT or M25 conduit entries on both sides and one 1/2-inch NPT or M20 entry at the rear, and is compatible with the VDI/VDE 3845 NAMUR mounting standard.
Multiple switch types and fieldbus communication options
Available options include mechanical SPDT and DPDT switches, as well as PNP, NPN, 2-wire, reed, and NAMUR intrinsically safe proximity switches. AS-I, Profibus DP, and DeviceNet communication protocols are supported.
Installation & maintenance notes
Ambient operating temperature limits
During installation and operation, ensure that the switch box ambient temperature remains within the specified range of -25°C to 65°C (-13°F to 149°F).
FAQ
What protection ratings are available for the Series 5B resin switch box in harsh environments?
This series of switch boxes is UL/NEMA type certified and offers multiple protection rating options for field environments requiring protection from rain, dust, and impact, allowing operation under IP66/67/68 and NEMA 4/4x conditions.
How does the switch box operate in relation to valve position indication?
The switch box provides intuitive valve position indication through a high-visibility indicator. Combined with up to 6 switches, it delivers reliable valve status outputs for remote monitoring and local confirmation.
Which communication protocols can be integrated with this switch box during selection?
Available communication protocols include AS-I, Profibus DP, and DeviceNet, enabling integration according to the control system fieldbus.
What is the temperature range of this series, and does it have a special sealing design?
The operating temperature range is -25°C to 65°C, with protective features such as secondary spindle sealing and O-rings to prevent water ingress and corrosion in field applications.
What key installation and wiring considerations apply to the switch box?
The cover and base feature a compact design secured by captive bolts. Multiple conduit entry options are available (dual-side 2x3/4" NPT or M25, rear 1x1/2" NPT or M20), and VDI/VDE 3845 (NAMUR) compatibility is supported.





