Product Details
Functional Engineering Overview
The VR-H 4116 is a high-reliability safety relay integrated into a compact terminal housing, engineered for critical switching applications within HIMA safety-related systems. This module features a single fail-safe changeover contact designed to maintain circuit integrity under rigorous industrial conditions. Utilizing hard gold-plated AgNi (Silver-Nickel) contacts, the VR-H 4116 ensures exceptional conductivity for both low-level signals and higher power loads, providing a versatile interface between safety logic and field actuators.
Detailed Technical Specifications
-
Model Identification: VR-H 4116
-
Contact Architecture: 1 Fail-safe changeover contact (SPDT), sealed
-
Nominal Input Voltage: 24 VDC (Range: 20.4 V to 28.8 V)
-
Typical Current Draw: 20 mA
-
Switching Performance: Activation time ~7 ms; Reset time ~5 ms
-
Contact Material: AgNi with hard gold-plating for low-contact resistance
-
Short-Circuit Protection: Integrated $\le$ 4 A time-lag fuse
-
Housing Protection: IP20 rated terminal enclosure
-
Thermal Management: Power dissipation between 1 W and 2 W
-
Ambient Operating Range: -25°C to +50°C
-
Wiring Interface: 0.25 to 2.5 mm² (AWG 24-14) via screw terminals
-
Mounting Compatibility: Standard 35 mm DIN rail or C-profile rail
Installation and Reliability Standards
The VR-H4 116 is designed for high-density mounting with no mandatory clearance required between adjacent units, maximizing cabinet space efficiency. The hard gold-plated contacts are specifically advantageous in "dry circuit" applications where low voltages (starting at 1mV) must be switched without oxide layer interference. For high-demand safety loops, the integrated 4A time-lag fuse serves as a critical safeguard against field-side overcurrent, protecting the relay’s internal switching structure.
Technical FAQ
What is the benefit of gold-plated contacts in the H4116?
The gold plating prevents oxidation, ensuring the relay can reliably switch very low currents ($\ge$ 1 mA) even after long periods of inactivity, which is common in emergency standby systems.
Can this relay be mounted in any orientation?
Yes, the H4116 supports both horizontal and vertical mounting on standard DIN rails without affecting its switching dynamics or the 1 ms bounce time specification.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.