Bray 5B Series aluminum valve position monitoring switch boxes are designed for rotary actuators compliant with VDI/VDE 3845 (NAMUR), providing electrical valve position feedback. Featuring IP66/67, NEMA 4/4X, and UL50E salt spray protection, they are available with mechanical or proximity switches, fieldbus communication, and intrinsically safe configurations for valve position monitoring in harsh environments, centralized monitoring systems, and SIL 3 safety instrumented loops.
Series 5B Aluminum Switch Box Product Image
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Bray 5B Series Aluminum Valve Status Monitoring Switch Box
Aluminum switch box supporting multiple valve position feedback signals and NAMUR proximity switches
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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
- Ingress Protection Rating
- IP66/67, NEMA 4/4X, UL50E Salt Spray
- Operating Temperature Range
- -25°C to 65°C (-13°F to 149°F)
- Mechanical Switch Types
- SPDT, DPDT
- Proximity Switch Types
- PNP, NPN, 140V 2-wire, 250V 2-wire, reed switch, NAMUR intrinsically safe
- Maximum Number of Switches
- 6
- Communication Protocols
- AS-I, Profibus DP, DeviceNet
- Mounting Standard
- VDI/VDE 3845 (NAMUR)
- Conduit Entries
- 2x ¾" NPT or 2x M25
- Certifications
- CE, cULus, SIL 3; optional ATEX, IECEx
- Enclosure Material
- Aluminum Alloy
- Valve Position Indicator Color Options
- Red/Yellow (standard), Red/Green, Black/Yellow, Reversed Red/Green
Application scenarios
Valve Position Feedback for Quarter-Turn Actuators in Harsh Environments
Series 5B can be mounted on quarter-turn actuators compliant with VDI/VDE 3845 (NAMUR) and provides electrical valve position feedback through mechanical or proximity switches. Its IP66/67, NEMA 4/4X, and UL50E salt-spray protection make it suitable for industrial sites exposed to moisture, rain, or salt spray.
Valve Position Monitoring in Intrinsically Safe Configurations
Series 5B is available with NAMUR intrinsically safe proximity switches and optional ATEX or IECEx certified configurations for monitoring quarter-turn actuators requiring intrinsically safe valve position feedback.
Centralized Valve Status Monitoring in Fieldbus Systems
Series 5B supports AS-I, Profibus DP, and DeviceNet communication protocols for centralized remote monitoring of quarter-turn actuator valve position status in fieldbus architectures.
Valve Position Feedback in SIL 3 Safety Instrumented Loops
With SIL 3 capability, Series 5B can be used as a valve position feedback component for quarter-turn actuators in safety instrumented loops with safety requirements.
Quarter-Turn Actuator Status Monitoring with Multiple Switch Configurations
Series 5B can be configured with up to 6 mechanical or proximity switches for quarter-turn actuator monitoring applications requiring multiple valve position status signals or interlock feedback.
Selection points
Configuration Capability for up to 6 Switches
This series of switch boxes can be configured with up to 6 switches, making it suitable for applications requiring multiple valve position feedback signals.
Multiple Switch Types and Industrial Communication Protocols
Available options include SPDT and DPDT mechanical switches, as well as PNP, NPN, 140V 2-wire, 250V 2-wire, reed switch, and NAMUR intrinsically safe proximity switches. AS-I, Profibus DP, and DeviceNet communication protocols are also supported.
Aluminum Alloy Enclosure and IP66/67 Protection
The product features an aluminum alloy enclosure with IP66/67 and NEMA 4/4X protection ratings and complies with UL50E salt spray requirements.
NAMUR Standard Mounting and Dual Conduit Entry Options
The product is compatible with the VDI/VDE 3845 (NAMUR) mounting standard and provides two 3/4 in. NPT or two M25 conduit entries.
Safety and Hazardous Area Certification Options
The product offers CE, cULus (most models), and SIL 3 capability, with optional ATEX and IECEx certifications. NAMUR intrinsically safe proximity switch options are also available.
High-Visibility Valve Position Indicator and Color Options
The product is equipped with a high-visibility valve position indicator in standard red/yellow, with optional red/green, black/yellow, and reversed red/green combinations.
Installation & maintenance notes
Unused Conduit Entries Must Remain Sealed
During field wiring, unused conduit entries must be fitted with sealing plugs matching the entry thread type to maintain the IP66/67 and NEMA 4/4X protection of the Series 5B switch box.
Ensure Reliable Alignment and Engagement Between the Switch Box Shaft and Rotary Actuator
The Series 5B switch box should be installed according to the VDI/VDE 3845 (NAMUR) interface standard, ensuring that the switch box shaft is correctly aligned and securely engaged with the mating gear or coupling of the rotary actuator to ensure valve position feedback is consistent with actuator operation.
FAQ
How does the Series 5B switch box work?
This series of switch boxes provides visual monitoring of rotary actuator status through a compact design with a highly visible valve position indicator. The indicator dome can be rotated to switch the open/closed visual display, enabling quick on-site valve status verification.
Which control-system communication protocols is the Series 5B suitable for?
It supports communication protocols including AS-I, Profibus DP, and DeviceNet, enabling integration and data transmission across different control systems.
How does this switch box perform in harsh environments in terms of protection?
It provides IP66/67 and NEMA 4/4X protection, with optional UL50E salt spray protection. The aluminum base and cover offer corrosion, wear, and impact resistance, making it suitable for outdoor and industrial applications.
What switch configurations and mounting requirements are available for the Series 5B?
Mechanical SPDT and DPDT switches and multiple proximity switch configurations are available, including PNP, NPN, 140V 2-wire, 250V 2-wire, reed, and NAMUR intrinsically safe. It supports up to 6 switches and mounting complies with VDI/VDE 3845 (NAMUR).
Which key specifications should be considered during selection to ensure compatibility?
Consider certification requirements, communication protocol, protection rating, temperature range, port type (2x ¾" NPT or 2x M25), available quantity and type of switches, and mounting requirements. Specific configurations must be confirmed according to the actual model and application conditions.
Documents
Product Brochure - Valve Automation Center (VAC)Product information · EnglishProduct Brochure - Series 5A, 5B and 5C Switch BoxesProduct information · EnglishProduct Brochure - Valve Status Monitor Series 5A/5B/5CProduct information · EnglishIOM Manual - Series 5A/5B Intrinsically Safe Switch BoxesManual · EnglishIOM Manual - Series 5B/5C AS-iManual · EnglishIOM Manual - Series 5B/5C DeviceNetManual · EnglishIOM Manual - Series 5B/5C Profibus DPManual · EnglishIOM Manual - Valve Status Monitor Series 5A/5BManual · EnglishIOM Manual - Series 5A/5B Switch BoxesManual · EnglishSafety Manual - Series 5A, 5B and 5C Switch BoxesManual · EnglishReference Guide - Hazardous Area ProductsProduct information · EnglishReference Guide - Intrinsic Safety Reference GuideProduct information · EnglishTechnical Manual - Series 5B Switch BoxesManual · EnglishTechnical Manual - Series 5B/5C CommProManual · English