Description
Product Overview
The BOSCH 0332201107 changeover micro relay is engineered to meet the demanding requirements of modern automotive and industrial control systems. Featuring a 12 V coil voltage and a dual‑rated contact capacity of 30 A (normally open) and 10 A (normally closed), this relay delivers precise switching performance while maintaining a compact footprint. Its five‑pin configuration, solder‑type connectors, and machined exterior provide a secure and reliable electrical interface that can be easily integrated into printed circuit boards or harnesses. The relay is built to withstand temperatures ranging from –40 °C to +100 °C, ensuring consistent operation in harsh environments. With a maximum switching current of 10 A and a wattage rating of 120 W, the device balances power efficiency with durability, making it suitable for a wide range of applications, from engine management to lighting control. The product dimensions of 0.56 × 0.56 × 0.9 inches and a lightweight of 0.353 oz further contribute to its ease of installation in space‑constrained designs. Designed and manufactured by Bosch, a brand with over four decades of experience in relay technology, this component benefits from rigorous quality testing and adherence to industry standards, guaranteeing long‑term reliability and performance.
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Usage
This micro relay is ideally suited for a variety of real‑world scenarios where compact size, high switching capacity, and temperature resilience are essential. In automotive applications, it can be employed for controlling fuel injectors, ignition coils, and auxiliary lighting circuits, where rapid and reliable switching is critical for engine performance and safety. Industrial users will find the relay valuable in machinery control panels, HVAC systems, and process automation equipment, where it can manage motor starters, solenoid valves, and sensor feedback loops. The 12 V coil voltage aligns with common vehicle and low‑voltage industrial power supplies, simplifying integration without the need for additional voltage conversion. Its 250 000 switching cycle rating ensures that the relay can endure frequent on‑off cycles typical of modern electronic control units, reducing maintenance costs and downtime. The solder‑type contacts allow for secure, low‑resistance connections that are resistant to vibration and mechanical stress, making the relay a dependable choice for mobile platforms, heavy‑duty equipment, and remote installations where reliability is paramount.
Why Choose Us
Choosing the BOSCH 0332201107 changeover micro relay means selecting a component backed by a legacy of engineering excellence and a commitment to quality. Bosch’s extensive experience in automotive and industrial relay design translates into a product that meets stringent performance criteria while offering ease of use for engineers and technicians. The relay’s robust construction, featuring a machined housing and high‑temperature tolerant materials, ensures that it can operate reliably under extreme conditions without degradation. Additionally, Bosch provides comprehensive technical support, detailed datasheets, and a responsive customer service team that can assist with selection, installation, and troubleshooting. This level of after‑sales service gives users confidence that any issues will be addressed promptly, minimizing project risk. The component also complies with relevant industry specifications, including UL standards, reinforcing its suitability for safety‑critical applications. By integrating this relay into your design, you benefit from a proven solution that reduces the need for extensive testing and validation, accelerating time‑to‑market and enhancing overall system reliability.
Key Features
- Compact five‑pin design saves valuable board space while delivering high current capability.
- Dual contact ratings of 30 A (NO) and 10 A (NC) provide flexible switching options for diverse loads.
- Operates reliably across a wide temperature range from –40 °C to +100 °C, ideal for harsh environments.
- Long‑life performance with up to 250 000 switching cycles reduces maintenance and replacement costs.
- Backed by Bosch’s dedicated technical support and warranty for peace of mind.
FAQ
What is the maximum voltage the relay can handle on its contacts?
The relay is rated for a maximum contact voltage of 250 V AC/DC, which covers most automotive and industrial control applications.
Can this relay be used in a high‑vibration environment?
Yes, the solder‑type contacts and robust machined housing are designed to resist vibration and mechanical shock, making it suitable for mobile and industrial equipment.
Is the relay compatible with standard 12 V automotive power supplies?
Absolutely. The coil voltage is 12 V, matching typical vehicle electrical systems, so no additional voltage conversion is required for installation.
What warranty does Bosch provide for this relay?
Bosch offers a standard limited warranty that covers manufacturing defects and ensures replacement or repair within the warranty period, backed by their global support network.
How many switching cycles can the relay endure before failure?
The relay is rated for up to 250 000 mechanical switching cycles, providing long‑term reliability for applications with frequent on/off operations.




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