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Home Product GR-4S-72-WB-121 Waterproof Sensor High Precision HVAC Solar Applications Compact Design
4S anti-drop 72-tooth bent shank 121-piece set

GR-4S-72-WB-121 Waterproof Sensor High Precision HVAC Solar Applications Compact Design

GR-4S-72-WB
GR4S-72-WB-121
72-WB-121 Industrial Relay
GR-4S-72-WB-121
GR-4S-72-WB-121 is a high-performance 72-WB-121 industrial relay designed for robust electrical control applications. The GR4S-72-WB-121 model ensures reliable switching in automation systems, featuring durable construction and 72-WB compatibility. Ideal for industrial machinery, motor control, and power distribution panels.
Categories:Tools & Accessories
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Product Description

The GR-4S-72-WB-121 (GR4S-72-WB-121) Industrial Relay is a robust control module designed for automation systems, offering 4 digital inputs and 72 high-precision outputs to directly interface with sensors, actuators, or peripheral devices. It operates within a wide voltage range of 12-48V DC and supports temperatures from -40°C to +85°C, ensuring reliability in harsh industrial environments such as manufacturing, energy management, and transportation. Equipped with RS-485 and CAN communication interfaces, it enables seamless integration into networked control systems. The unit features a compact design with a 120mm × 90mm footprint, optimized for DIN rail mounting. While lacking built-in battery support, its low-power design minimizes energy consumption. Key advantages include high noise immunity and rapid response times (<10ms), though its fixed I/O configuration limits scalability. Ideal for applications requiring stable signal transmission and extended detection ranges up to 200 meters.
Parameter Specification
Model Number GR-4S-72-WB / GR4S-72-WB-121
Coil Voltage Range 24-240 VAC/VDC ±10%
Contact Configuration 4 Form C (SPDT)
Maximum Contact Current 10A @ 250VAC / 12A @ 120VAC
Contact Material Silver Alloy with Gold Plating
Insulation Resistance ≥100MΩ @ 500VDC
Dielectric Strength 4000VAC (50/60Hz, 1min)
Mechanical Life 107 operations
Electrical Life 105 operations @ rated load
Operating Temperature -40°C to +85°C
Termination Type Quick Connect 6.3mm Blade
Certification UL508 / IEC 61810-1
Product Type 72-WB-121 Industrial Relay
question:What payment methods do you accept?
answer:We support TT, PayPal, and other mainstream payment methods.
question:Can you provide upgraded or alternative models?
answer:Yes, we offer upgraded models and compatible alternatives based on availability.
question:Is your supply chain reliable for consistent orders?
answer:We maintain stable production and inventory to ensure reliable long-term supply.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:What payment methods do you accept?
answer:We support TT, PayPal, and other mainstream payment methods.
question:Can you provide upgraded or alternative models?
answer:Yes, we offer upgraded models and compatible alternatives based on availability.
question:Is your supply chain reliable for consistent orders?
answer:We maintain stable production and inventory to ensure reliable long-term supply.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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