Afriso – NB 220 H – Overfill Prevention Transducer, WHG‑Approved, 24 V DC

The Afriso NB 220 H is a level detection transducer designed for overfill prevention in tanks storing flammable or non-flammable liquids. It connects to a compatible PTC sensor and trips a relay when a high-level condition is detected. WHG-approved for environmental compliance, it features a DIN-rail housing with LED indicators and supports direct integration into industrial control systems.

Key Features:

• Model: NB 220 H

• Function: Overfill prevention with thermal sensor input

• Sensor Type: PTC (e.g., Afriso or Fafnir Type 76)

• Supply Voltage: 24 V DC

• Relay Output: 1 SPDT, 250 V AC / 4 A max

• Indication: Green LED (power), Yellow LED (relay status)

• Housing: DIN-rail mountable, IP30

• Dimensions: 50 × 110 × 110 mm

• Operating Temperature: –25 °C to +60 °C

• Certifications: WHG (Z‑65.11‑193) compliant

• Application: Suitable for liquids with flash point >55 °C