The H16B-SE-4B-PG21 is designed for industrial connection interfaces that require stable mounting and reliable operation. It features a surface mounting upper housing with a four-bolt fixing structure, providing secure attachment to panels, enclosures, and equipment surfaces. The PG21 cable entry supports flexible wiring while maintaining a clean and organized installation.
Manufactured from die-cast aluminum, the housing delivers strong mechanical performance and durability in demanding industrial environments. The powder-coated surface in RAL 7037 field gray enhances resistance to corrosion and mechanical wear. Integrated sealing components help protect internal connections from dust and external influences, contributing to consistent and reliable performance.
The H16B-SE-4B-PG21 is well suited for automation equipment, industrial machinery, and control cabinet applications. Its solid mounting design, practical cable entry, and robust construction make it an effective solution for installations requiring dependable connections and long-term operational stability.

Technical Data
| Series | Classic regular housing |
| Specifications | 16B |
| Housing type | Surface mounting upper housing |
| Outgoing method | Side outlet |
| Locking type | Dual lock |
| Thread | PG21 |
| Housing material | Die casting aluminum |
| Housing color | RAL 7037 (field gray) |
| Surface treatment | Powder coating |
| Interlocking method | Metal elastic connection |
| Material | Galvanized iron |
| Seals | NBR |
| Flame retardant rating as per UL94 | V0 |
| Working temperature | -40℃ … +125℃ |
| Protection rating | IP65 |
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