SUNTES DB-4155EF Spring-Applied, Electromagnetically Released E-Booster
Product Overview
The SUNTES DB-4155EF E-Booster generates hydraulic pressure through spring force and releases the mechanism electromagnetically. Combined with a compatible hydraulic disc brake, it provides an electrically controlled hydraulic actuation arrangement. The spring and electromagnetic release functions must be considered together when defining the complete brake-control sequence.
This model is specified with 12 cm³ hydraulic displacement and master-cylinder configuration DB-2205MS-01. The complete EF or EFT designation matters when selecting or replacing the unit; similarly sized boosters can use different master cylinders or provide different fluid volumes.
Operation and Performance
The electrical specification is DC150–210 V for pull-in and DC20–31 V for holding. Stated continuous holding power is 37 W at DC31 V, while required power supply capacity is 3253 VA. Assembly mass is 52 kg. The VA requirement and the holding-power figure describe different electrical conditions and should not be treated as interchangeable ratings.
The stated duty is 360 cycles/h at 50% ED, or continuous energized holding. Continuous energized holding refers to the electromagnetic actuator duty; it does not establish the hydraulic holding behavior of every connected brake circuit. The hydraulic pressure characteristic should be checked against the actual operating point and the brake-fluid volume required.
Detailed Specifications
| Technical Specifications | |
|---|---|
| Master cylinder model | DB-2205MS-01 |
| Operating fluid | Brake fluid (DOT3 equivalent) |
| Discharge volume (cm3) | 12 |
| Supply pull-in voltage (V) | DC150–210 |
| Supply holding voltage (V) | DC20–31 |
| Power consumption (W) | 37 (continuous holding at DC31 V) |
| Duty rating | 360 cycles/h, 50% ED, or continuous energized holding |
| Required power supply capacity (VA) | 3253 |
| Applicable power supply box | AP-2403 |
| Mass (kg) | 52 |
Model Configuration and Compatibility
The listed configuration uses DOT3-equivalent brake fluid with DB-2205MS-01. No mineral-oil variant is specified in this table.
Use the SUNTES AP-2403 power supply box specified for this E-Booster. SUNTES also specifies a 600 mm cable with an intermediate connector for the E-Booster range. Check the connector arrangement, cable routing and the correct pull-in/holding supply sequence during integration.
Drawings and Performance References
Use the dimensional and performance references for the exact assembly. Lettered dimensions correspond to the drawing; a dash or blank in a specification is retained as stated and is not an additional rating.
Selection and Installation Considerations
Determine the hydraulic pressure required by the brake and the total fluid displacement needed for the connected calipers. Compare these requirements with the specific E-Booster data and pressure characteristic, rather than selecting solely by the actuator frame size or electrical power.
Check the electrical supply capacity, operating frequency, required energized duration, mounting clearances and hydraulic fluid. For a replacement, compare the complete booster code, master-cylinder code, mounting drawing and connector arrangement. Confirm the apply/release sequence at the system level with the exact brake and control circuit.
Ordering Information
Specify DB-4155EF with its full suffix where applicable, AP-2403 supply arrangement, master-cylinder code, required fluid, connected brake models, hydraulic pressure, displaced volume per operation, operating frequency and quantity. Include the installed nameplate and drawing for replacements.
