Models and ratings Available models: HF, HF115F Q, JQX 115F Q, 048 1H, JQX 115F Q 048 1H, HF115F Q 048 1H. Electrical rating: 20 A switching capacity. Coil / operating voltage: 48 VDC. Key benefits — why this product solves problems Reliable high-current switching: 20 A contact rating handles many common control and power tasks without adding larger, more expensive contactors. Direct compatibility with 48 VDC systems: designed to operate on 48 VDC coils, simplifying integration into telecom, battery-backed and other DC installations that use 48 V. Multiple model options for easy replacement and system matching: the HF and JQX families and the variants that include the 048 1H suffix give clear model choices so you can pick the exact relay that matches existing equipment or design requirements. Clear model designations reduce selection errors: consistent naming makes it straightforward to identify coil voltage and variant differences when ordering or replacing parts. Suitable for control and automation circuits: intended function as an electrical relay makes these models useful for switching loads, isolating control circuits, and implementing automated control logic. Important attributes Function: electromechanical relay for switching and isolation in electrical control circuits. Compatibility: made for systems that require a 48 VDC coil and need up to 20 A of switched current. Performance: 20 A contact capacity provides robust switching for resistive and many inductive loads (verify load type and derating in your application). Model variations: HF, HF115F Q, JQX 115F Q and their 048 1H variants represent related relay families with specific designation differences; consult the exact model code when replacing or specifying. Mechanical and mounting details: size, pinout and mounting style can vary between model variants; confirm mechanical specifications for panel, socket or PCB fitment. Practical selection and use tips Match coil voltage and contact rating: always confirm the relay coil is 48 VDC and contacts are rated for 20 A for your circuit. Use the full model code when ordering or replacing parts to ensure you receive the correct variant (for example HF115F Q 048 1H versus HF115F Q). Consider the load type: for inductive or motor loads, check required suppression or derating rather than relying on switching current alone. Typical applications Telecom and network power systems: switching and control in 48 VDC power distribution or backup battery systems. Industrial control and automation: relay outputs for PLCs, control cabinets, and machine control where 48 VDC control and up to 20 A switching are required. DC lighting, solenoid and accessory circuits: switching medium-current DC loads in vehicles, battery systems, or fixed 48 V installations. Ordering and replacement guidance Provide the exact model code (including any 048 1H suffix) to ensure correct replacement. Verify electrical and mechanical compatibility (coil voltage, contact rating, pinout, mounting) before installation. This product line provides straightforward, 48 VDC electromechanical relays in HF and JQX families with a 20 A contact rating and multiple variant codes to match common replacement and design needs.