70.13 EUR
Bosch 2339402230 Solenoid Switch
The Bosch 2339402230 solenoid switch is a reliable starter switch for heavy-duty vehicles. Its robust construction ensures durability and long-lasting performance
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Bosch 2339402230 Solenoid Switch
The Bosch 2339402230 Solenoid Switch is a high‑performance electromagnetic relay designed to provide reliable and efficient control of starter motors in automotive and industrial applications. Engineered with precision, this component delivers consistent operation under demanding conditions, ensuring that the starter motor receives the correct voltage and current when required.
Core Functionality
The primary role of the solenoid switch is to act as an electrically controlled contactor. When a control signal (typically 12 V or 24 V DC) is applied, the internal electromagnet generates a magnetic field that pulls a movable armature toward the coil. This action closes the high‑current contacts, allowing power to flow from the battery or supply source directly to the starter motor.
Key functional attributes include:
- Fast response time – milliseconds between signal application and contact closure.
- High current handling – rated for starter motors that draw up to several hundred amperes during cranking.
- Robust mechanical design – durable contacts and armature capable of withstanding repeated cycling without degradation.
- Low voltage operation – compatible with standard automotive battery voltages (12 V, 24 V).
Technical Specifications
The following technical data outlines the performance envelope of the Bosch 2339402230:
| Parameter | Specification |
|---|---|
| Coil Voltage | 12 V DC (typical), 24 V DC (optional) |
| Coil Resistance | ~10 Ω (varies with voltage) |
| Operating Current | 1.2–1.5 A (12 V coil) |
| Contact Rating | Up to 400 A at 12 V, 200 A at 24 V |
| Contact Material | Nickel‑plated copper for low resistance and high conductivity |
| Operating Temperature Range | -40 °C to +125 °C |
| Ambient Humidity | Up to 95% non‑condensing |
| Mounting Type | Panel or DIN rail mounting with standard screw holes |
| Dimensions (approx.) | 60 mm × 40 mm × 30 mm |
| Weight | ~0.25 kg |
Applications
The Bosch 2339402230 is widely used in:
- Automotive starters – both passenger cars and light commercial vehicles.
- Heavy‑vehicle starter systems – trucks, buses, and construction equipment.
- Industrial motor control – where a reliable start/stop function is required for large motors.
- Marine propulsion starters – engines that demand rapid cranking under variable load conditions.
- Aviation auxiliary power units (APUs) – precise and dependable starter operation in aircraft systems.
Installation Guidelines
Proper installation ensures optimal performance and longevity:
- Mounting: Secure the solenoid switch to a clean, dry surface using the provided screws. Ensure that the mounting orientation allows for unobstructed movement of the armature.
- Wiring: Connect the coil terminals to the control circuit (typically a relay or ignition switch). Use appropriately rated wire gauge to handle the coil current without excessive voltage drop.
- Contact Connections: Attach the high‑current contacts to the battery and starter motor leads. Ensure tight, corrosion‑free connections; use terminal blocks or soldered joints as appropriate.
- Grounding: Provide a solid ground connection for the solenoid housing to prevent electrical noise and ensure safety.
- Environmental Protection: If operating in harsh environments, consider sealing the unit with an IP rating or installing it within a protective enclosure.
Maintenance & Troubleshooting
Routine checks help maintain reliability:
- Visual Inspection: Look for signs of wear, corrosion, or damage on contacts and coil terminals.
- Electrical Testing: Verify coil resistance matches specifications; measure contact resistance under load to detect oxidation.
- Functional Test: Apply the control voltage and observe the armature movement. Ensure that contacts close fully without sticking.
- Cleaning: Remove dust or debris from the housing and contacts using a dry brush or compressed air.
Safety Considerations
When working with high‑current starter circuits, observe these safety practices:
- Disconnect the battery before performing any maintenance.
- Avoid contact with live terminals during operation.
- Use insulated tools and wear appropriate personal protective equipment (PPE).
- Ensure that all wiring complies with local electrical codes and standards.
Benefits of Choosing Bosch 2339402230
The Bosch 2339402230 Solenoid Switch offers several advantages:
- Reliability – proven track record in automotive and industrial sectors.
- Durability – robust construction resists vibration, temperature extremes, and electrical surges.
- Precision Engineering – tight tolerances guarantee consistent contact performance.
- Ease of Integration – standard dimensions and mounting options simplify retrofits and new installations.
- Low Maintenance – minimal wear on contacts due to high‑quality materials.
Conclusion
The Bosch 2339402230 Solenoid Switch stands as a cornerstone component for starter motor control across a spectrum of applications. Its combination of rapid response, high current capacity, and durable design makes it an ideal choice for engineers seeking dependable performance in demanding environments.
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| Identifiers | |
| Brand | ![]() Bosch is a brand of power tools and appliances. The company was founded in 1886 and produces a wide range of power tools, appliances, and accessories. Bosch tools are known for their quality and durability, and the company is a leader in innovation and design. |
| Model | Bosch 2339402230 |
| MPN | Bosch 2339402230 |
| ID | 8308505 |
| Dimensions / Weight | |
| Key Features | |

