Original Bosch 0332207402 5 Pin SPDT Black Cube Micro Relay 24V DC 10A NO 10A NC Automotive Relay

Product Specifications

• Brand: Genuine Bosch Original
• Part No.: 0332207402
• Internal Trade Code: RW402
• Cross DAF OEM: 1670140
• Cross Volvo OEM: 1078689
• Coil Voltage: 24V DC
• Coil Resistance: 27Ω standard value
• Contact Type: SPDT Single Pole Double Throw (5Pin Cube Micro)
• Rated Current: 10A Normally Open / 10A Normally Closed Light Resistive Dual Load
• Built-in Component: Internal freewheeling surge protection diode
• Extra Feature: No integrated plastic/metal mounting tab
• Protection Grade: Terminals IP5K4, Housing IP20
• Working Temperature: -40℃ ~ +100℃
• Housing: Compact black flame retardant cube plastic, no mounting ear
• Warranty: 12 Months Genuine Bosch Factory Warranty

Core Electrical & Mechanical Specifications

1. Nominal Coil Voltage: DC 24V
2. Continuous Contact Load: 10A @24V DC NO, 10A @24V DC NC resistive light load
3. Coil DC Resistance: 27Ω
4. Mechanical Service Life: ≥10,000,000 operations
5. Electrical Service Life: ≥300,000 cycles under full rated resistive load
6. Standard Cube 5-Pin Definition: 1(Coil+), 2(Coil-), 3(Common), 4(NO), 5(NC)
7. Overall Housing Dimension: 26 × 23 × 15.5 mm compact cube size, no mounting tab
8. Vibration Resistance Standard: 10–500Hz heavy commercial vehicle grade
9. Terminal Contact Protection: IP20

Wide Application Range

1. OEM matching light-signal 5pin SPDT black cube relay spare part for DAF/Volvo heavy trucks and small 24V diesel gensets, dual-circuit switching control for indicator lights, small fans and alarm signal circuits
2. Direct plug-and-play replacement for failed original 0332207402 / RW402 OEM relay: signal equipment switching failure, intermittent power loss and ECU surge damage
3. Universal core stock for DAF/Volvo heavy truck dedicated repair shops and 24V generator rental companies for daily 24V heavy vehicle & 24V genset small signal circuit overhaul
4. Safety control system upgrade retrofit for 24V mini gensets and heavy commercial vehicles, upgrade stable 10A/10A dual-path SPDT switching protection function with built-in anti-surge diode for standard cube relay installation slots

Common Equipment Failures Solved

• Cheap generic unprotected cube relays lack surge diodes, inductive reverse voltage easily burns vehicle ECU and generator control PCBs
• Thin contacts of low-cost relays burn and melt under 10A load, leading to indicator light outages and signal interruption
• Inferior thin plastic cube housing cracks under long-term heavy truck vibration, internal coil breakage causing total loss of dual-circuit switching function
• Mismatched 12V relays burn coil instantly after power supply, unable to operate normally
• Original Bosch 0332207402 black cube SPDT micro relay damaged, direct plug-and-play replacement without harness modification
• Heavy 24V truck/genset signal circuits require cube 5pin SPDT changeover relay with protective diode; 4pin single normally open relays cannot realize two-way circuit automatic switching