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Home Product SR2B121JD High-Current Power Relay 12V DC SPDT Durable Automotive Electronics Component
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SR2B121JD High-Current Power Relay 12V DC SPDT Durable Automotive Electronics Component

SR2B121JD relay
12V SPDT relay
SR2B series relay
SR2B121JD
SR2B121JD relay is a 12V SPDT relay within the SR2B series, designed for high-current switching applications. It features a compact size, reliable performance, and durable construction, suitable for automotive systems, industrial controls, and electrical equipment requiring single-pole double-throw operation.
Categories:Automation
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Product Description

The SR2B121JD relay is a 12V SPDT electromechanical switching device from the SR2B series, designed for industrial control systems, automotive applications, and automation equipment. It operates on a 12V DC coil voltage (9-14V range) and features a single-pole double-throw (SPDT) configuration with 10A contact rating, enabling control of two independent circuits. This relay supports direct integration with PLCs, sensors, and power modules via standard terminal connections, though it lacks built-in communication interfaces. With an operational temperature range of -40°C to +85°C, it suits harsh environments. Key advantages include compact size (19.8mm x 15.7mm base footprint), high dielectric strength (2,500V AC), and long mechanical life (100,000 cycles). Limitations include no battery compatibility, screenless design, and fixed detection through direct contact switching. Its silver-alloy contacts ensure low resistance (≤50mΩ) for reliable signal and load management.
Parameter Specification
Model Number SR2B121JD
Relay Type 12V SPDT Relay (SR2B series)
Contact Form SPDT (1 Form C)
Coil Voltage 12V DC ±10%
Contact Rating 10A 250V AC / 10A 30V DC
Max Switching Power 2500VA (AC) / 300W (DC)
Contact Resistance ≤100mΩ (initial)
Insulation Resistance ≥100MΩ (500V DC)
Dielectric Strength 1000V AC (50/60Hz, 1min)
Operate Time ≤15ms (at rated voltage)
Release Time ≤10ms (at rated voltage)
Mechanical Life 107 operations
Electrical Life 105 operations (rated load)
Temperature Range -40℃ to +85℃
Terminal Type PCB Quick Connect
question:Why are the product labels removed upon receiving the goods?
answer:Labels are removed to protect supplier privacy and prevent unauthorized resale.
question:Can I self-arrange official courier pickup for my order?
answer:Yes, you can arrange pickup by providing courier authorization and order details.
question:Why can other suppliers source discontinued models you can’t offer?
answer:Some suppliers may have exclusive access to remaining stock or alternate distribution channels.
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:Why are the product labels removed upon receiving the goods?
answer:Labels are removed to protect supplier privacy and prevent unauthorized resale.
question:Can I self-arrange official courier pickup for my order?
answer:Yes, you can arrange pickup by providing courier authorization and order details.
question:Why can other suppliers source discontinued models you can’t offer?
answer:Some suppliers may have exclusive access to remaining stock or alternate distribution channels.
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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