Model Code Breakdown:

• 604 = Braking Resistor Series
• C = Resistance Value Code
• A3 = Power Rating: 300 W
• B2 = Option Code: Modified Terminal / Connector Type

Resistance Value: 47 Ω (±5%)

Power Rating: 300 W (continuous), 900 W (10 sec peak)

Voltage Rating: 480 VDC maximum

Option B2 Specification: DIN rail mountable with spring-clip terminals (replaces screw terminals)

Enclosure Type: Aluminum housing, DIN rail clip included

Dimensions (W × H × D): 150 mm × 80 mm × 120 mm

Weight: 1.85 kg (includes DIN rail clip)

Terminal Type: Spring-clip terminals, 4 mm² wire capacity (B2 option)

Cooling: Natural convection

Operating Temperature: -25°C to +70°C

Insulation Class: Class B (130°C)

Protection Rating: IP20

Certifications: CE, UL, cUL, RoHS

Compatible Drives: AKD2G, AKD-P, S-Series, T-Series

Key Advantages:

• B2 option provides tool-free wiring via spring clips — reduces installation time
• DIN rail mounting enables panel integration without separate bracket
• Same electrical performance as 604-C-A3

Applicable Industries:

• Panel-mounted servo systems
• Retrofit applications where screw-terminal access is limited
• High-density control cabinets

Installation Requirements:

• Clip onto 35 mm DIN rail (TS 35)
• Connect B+/B- wires via spring clips (strip 8 mm, insert, release)
• Maintain 50 mm clearance above for airflow
• Max wire length: 5 m

Usage Notes:

• Spring clips accept solid or stranded wire up to 4 mm²
• Do not exceed 480 VDC on brake terminals
• Verify spring clip retention force annually in vibration-prone environments
• B2 option is not interchangeable with standard screw-terminal version without adapter