MAIN LEARNING OBJECTIVE
● The reader understands the full technical specifications, safe operating parameters, and practical classifications related to the WAGO 221-420 electrical connector with lever.
● The reader learns how to interpret OVC II (Overvoltage Category II) and PD2 (Pollution Degree 2) according to IEC 60664-1 and apply them in electrical installation contexts ⚡.
● The reader identifies correct wire sizing, current limits, and environmental conditions for reliable and safe performance 🛠️.
PRODUCT IDENTIFICATION AND GENERAL CHARACTERISTICS
● The WAGO 221-420 connector has a transparent housing and ten connection points in line.
● It has orange flat levers for quick conductor insertion and release.
● It works with rigid and semi-rigid wires from 0.2 to 4 mm² and flexible wires from 0.14 to 4 mm² 📏.
● It accepts flexible conductors without ferrules for direct connection.
● It supports a rated voltage of 450 V and a rated current of 32 A.
● It has an alternative rating of 600 V and 20 A under UL 486C (specific electrical connector safety standard).
● It uses spring clamp connection technology for secure and tool-free fastening 🔧.
● The wiring direction is lateral, and the required strip length is 11 mm.
● The maximum ambient temperature rating ensures safe operation in standard installation conditions 🌡️.
● The country of manufacture in Europe guarantees compliance with common EU electrical safety requirements.
● Packaging is available in a standard package size for distribution efficiency 📦.
SAFETY AND REGULATORY CLASSIFICATIONS
● The connector is classified under OVC II (Overvoltage Category II) and PD2 (Pollution Degree 2) according to IEC 60664-1.
● OVC II means the equipment can handle transient overvoltages typical of devices connected to fixed installations but not directly to the mains distribution system.
● In practical terms, OVC II includes appliances, portable tools, and similar devices supplied from the fixed installation but with additional protective elements ⚙️.
● PD2 means the equipment is intended for environments with only non-conductive pollution, except for occasional temporary conductivity caused by condensation.
● PD2 applies to most indoor environments where humidity is moderate and dust is non-conductive 🌫️.
● Both classifications ensure that insulation, creepage distances, and clearance distances are appropriate for the rated conditions.
DIMENSIONS AND PHYSICAL SPECIFICATIONS
● The width is 29.8 mm.
● The height is 15.8 mm 📐.
● The depth is 18.3 mm.
● The strip length is exactly 11 mm to ensure correct contact.
CABLE COMPATIBILITY AND MEASUREMENT SYSTEMS
● Accepts cables in both metric (mm²) and AWG (American Wire Gauge) sizes.
● Metric compatibility: rigid or semi-rigid 0.2–4 mm², flexible 0.14–4 mm².
● AWG compatibility: 24–12 AWG 🔌.
FIELD USAGE AND COMMON APPLICATIONS
● Suitable for branch connections inside enclosures.
● Used in low voltage lighting systems 💡.
● Suitable for luminaire connections and rosette wiring.
INSTALLATION SEQUENCE AND CONTACT SECURITY
● The lever is lifted to open the clamp.
● The conductor is inserted until it reaches the stop.
● The lever is pressed down until it is flush with the housing 🔒.
● The copper conductor must not be visible outside the housing.
CURRENT CAPACITY FOR FIXED INSTALLATIONS
● A conductor section of 0.5 mm² supports up to 6 A.
● A conductor section of 0.75 mm² supports up to 10 A.
● A conductor section of 1.0 mm² supports up to 13 A.
● A conductor section of 1.5 mm² supports up to 16 A.
● A conductor section of 2.5 mm² supports up to 25 A.
● A conductor section of 4.0 mm² supports up to 32 A 🔋.
SAFETY RULE FOR VOLTAGE DROP CONTROL
● For distances over 20 m with near-maximum load, increase the wire section to limit voltage drop 📊.
● Protect the circuit with a circuit breaker matching the cable size and load.
RELATED DOCUMENT LINK
● The original document is available at:
https://drive.google.com/file/d/155Z9Tnwzm2XSLk6OxRqEW5RmqZQ8A1Do/view?usp=drivesdk 📎
ADDITIONAL FIELD NOTES
● Transparent housing allows visual verification of conductor insertion.
● Lever mechanism is designed to avoid accidental opening 🛡️.
● The connector can handle mixed conductor types in the same unit.
● Storage should be in a dry and dust-free environment 📦.
CONCLUSION AND LEARNING OUTCOME
● The WAGO 221-420 connector meets defined safety classifications OVC II and PD2, ensuring suitability for specific electrical overvoltage and pollution conditions.
● Understanding these classifications helps in selecting appropriate equipment for the intended installation environment.
● Proper wire sizing, classification awareness, and protection coordination with a circuit breaker are essential for safe and efficient performance 🧠.
My Diary - Leonardo Cardillo 