CC-521 Multispan

Product Summary:
The Multispan CC-521 is a compact, reliable ON-OFF cooling controller featuring advanced defrost options, dual relay outputs, and high accuracy NTC input—suitable for a wide range of refrigeration applications.

Key Features:

• ON-OFF control with hysteresis adjustment (0.1–20.0°C)

• Defrost timer with minute/second selection

• Relay output: 2 NO-C-NC relays, 10A @230V AC

• Input: NTC sensor, accuracy ±1% FSD

• Sensor range: -50.0°C to 99.9°C

• User-friendly interface with 3-digit RED/WHITE LED display

• Offset, relay delay, and decimal point configuration

• Multiple body and keypad color combinations

• Power supply: 230V AC / 24V DC / 12V DC

Applications:

• Deep Freezers

• Display Cabinets

• Portable Chillers

• Heat Pumps

• Refrigerated Cabinets

Product Benefits:

• Flexible defrost configuration enhances refrigeration cycle control

• Durable polycarbonate build ensures reliability in harsh conditions

• Wide sensor compatibility simplifies installation

• Multiple mounting and color options support integration across systems

• Ideal for OEM and aftermarket retrofitting

FAQs:

Q1: Can I use this controller for both AC and DC power supply?
A1: Yes, the CC-521 supports 230V AC, 24V DC, and 12V DC (factory set), making it highly adaptable.

Q2: Is the defrost cycle programmable in seconds or only minutes?
A2: The defrost unit is selectable in both minutes and seconds, giving you complete control over defrost timing.

Q3: What kind of sensor is compatible with this controller?
A3: It uses an NTC sensor with 10kΩ nominal resistance, offering ±1% full scale accuracy over -50.0°C to 99.9°C range.