Relay PT114713 is a critical electrical control accessory exclusively designed for Hydraulic Rock Drills. It excels in harsh mining environments—for instance, underground coal mines with flammable gas, vibration-intensive tunneling sites, and cold high-altitude quarry drill rigs.
These settings pose severe challenges for drill relays: flammable methane/coal dust presence, intense vibration (up to 30G), voltage fluctuations, extreme temperatures, and dust contamination. These issues often cause relay explosion risks, contact failure, switching delay, or circuit burnout, leading to drill electrical system malfunction and costly downtime. Yet, Relay PT114713 maintains uncompromised performance under all these harsh conditions. In fact, it directly addresses five core pain points that plague mining operations.
First, its Ex d IIC T6 explosion-proof housing prevents ignition of flammable gases, complying with strict mining safety standards. This eliminates catastrophic safety hazards, unlike ordinary industrial relays. Second, the 10A switching capacity + silver alloy contacts handle drill electrical system load spikes, avoiding contact welding or burnout. Consequently, it improves circuit protection reliability by 30% compared to standard relays. Third, the high-sensitivity electromagnetic core triggers at ≤5V, ensuring responsive circuit switching even during drill voltage fluctuations. Likewise, this reduces actuation delay and optimizes drill operational efficiency.
Fourth, the vibration-dampened internal structure withstands 30G vibration from drill operation, preventing component loosening and contact misalignment. Above all, this ensures stable performance during high-intensity drilling tasks. Fifth, the wide temperature adaptability (-40°C~70°C) ensures reliable operation in freezing Arctic-grade mines and moderate-temperature underground drill compartments. On top of that, the dust-tight seal (IP65) blocks rock dust from entering the relay, protecting internal circuitry from abrasion and short-circuit.
Unlike ordinary industrial relays, this model is engineered for Hydraulic Rock Drills’ extreme working conditions. To elaborate, the explosion-proof design targets mining flammable environments, while the vibration-dampened core adapts to drill mechanical vibration. Thus, it outperforms generic relays in service life by 160%, significantly reducing replacement-related downtime.
Our manufacturing team uses precision electromagnetic coil winding + explosion-proof casting technology for the relay. Furthermore, each unit undergoes Ex d IIC T6 explosion-proof testing and 10A load verification. Additionally, the relay undergoes 100,000-cycle switching trials to ensure no performance degradation.
Notably, it operates stably in temperatures from -40°C (high-altitude cold regions) to 70°C (drill electrical control systems). Moreover, the silver alloy contacts endure 100,000 switching cycles with no excessive wear. In addition, the explosion-proof housing passes 500-hour pressure testing with no gas leakage.
The relay’s plug-and-play terminal design integrates seamlessly with mainstream Hydraulic Rock Drill electrical systems. It requires no wiring modifications for installation, simplifying maintenance. As a result, maintenance teams can complete replacement in 10 minutes using standard tools.
Our quality team conducts strict ISO 9001 verification for every unit. We perform explosion-proof tests, load capacity inspections, vibration resistance trials and sensitivity verification. Importantly, it complies with IEC 60255 international electrical relay standards and mining safety certifications.
Compatible with top Hydraulic Rock Drill brands, it serves as a direct OEM replacement. Thanks to its reliability, it reduces relay-related failure rates by 95%. Additionally, backed by a 12-month warranty, it lowers annual maintenance costs by 60%.
It not only ensures safe electrical circuit control for drill systems but also extends the service life of drill electrical components by 85%. Overall, Relay PT114713 delivers cost-effective, safety-focused performance for long-term mining operations. Beyond that, it minimizes downtime and safety hazards caused by relay failure, maximizing operational efficiency and worker protection.
