Product Details
Description
The HIMA H4137 / H 4137 is a durable switching relay specifically engineered for use in hazardous and potentially explosive industrial zones. It provides safe and reliable switching performance for both AC and DC circuits, supporting control and protection functions in automation and safety systems.
With a compact form factor and robust construction, this relay is built to operate dependably in harsh environmental conditions. Designed for 24 V DC control voltage and capable of switching loads up to 250 V AC at 4 A, the H 4137 delivers stability and long service life in critical safety applications.
Specifications
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Manufacturer: HIMA Paul Hildebrandt GmbH + Co KG, Germany
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Model: H4137 / H 4137
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Product Type: Switching Relay
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Rated Control Voltage: 24 V DC
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Switching Capacity: 250 V AC / 4 A maximum load
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Protection Design: Explosion-protected (Ex type)
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Ambient Operating Temperature: –25°C to +60°C
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Dimensions (W x H x D): 22 mm x 87 mm x 50 mm
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Mounting Style: DIN rail or module rack
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Contact Type: SPDT (Single Pole Double Throw), depending on configuration
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Insulation: Electrically isolated control and switching circuits
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Housing: Industrial-grade enclosure designed for field reliability
Features
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Explosion-Safe Operation: Built for hazardous locations requiring reliable isolation and safety.
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High Load Capacity: Handles up to 250 V AC at 4 A for various control applications.
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Compact Design: Slim profile for space-efficient installation in control cabinets.
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Stable Performance: Ensures dependable switching under continuous industrial load.
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Temperature Resilience: Operates reliably in environments ranging from –25°C to +60°C.
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Electrical Isolation: Enhances system safety and minimizes interference between circuits.
Applications
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Industrial safety systems and automation cabinets
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Oil, gas, and petrochemical plants with explosive atmospheres
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Power generation and energy distribution systems
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Control circuits in hazardous area instrumentation
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Signal switching and protection for critical field devices
FAQ
Q1: What is the maximum switching voltage of the H 4137 relay?
A1: It supports up to 250 V AC at a maximum load of 4 A.
Q2: Can this relay operate in explosive atmospheres?
A2: Yes, it is designed for explosion-protected applications in hazardous industrial areas.
Q3: What is the control voltage required for operation?
A3: The relay operates at a nominal 24 V DC control voltage.
Q4: How is it mounted in control systems?
A4: It can be installed on a DIN rail or integrated within HIMA system racks.
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
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.
Mastering Wire Identification in Industrial Automation: The Power of Ferrules and Cross-Ferruling
Proper wire labeling forms the cornerstone of reliable control system installation and long-term maintenance. In complex industrial automation environments, technicians terminate thousands of conductor ends inside control panels, marshalling racks, and field junction boxes. Ferrules serve as individual tube-shaped sleeve markers slipped onto conductors before final termination. While technicians historically relied on pre-printed individual letter rings, modern control panel builders utilize automated ferrule printing machines. These thermal-transfer printers generate durable, single-sleeve heat-shrink tags directly matching approved wiring schematics, significantly accelerating cabinet assembly workflows.