The Honeywell Q7800A1005 is a universal 22‑terminal wiring sub-base designed for integration with 7800 Series relay modules and S7830A annunciators. It enables pre-wiring before module installation and supports both panel and burner applications, providing a robust foundation for industrial and HVAC control systems.

Key Features:

Manufacturer: Honeywell
Model / P/N: Q7800A1005 (sometimes listed as Q7800 A 1005)
Terminals: 22 screw-down terminals, suitable for 14–18 AWG wiring
Mounting Styles:
- Q7800A1005: 2‑sided panel mount with conduit knockouts top/bottom/back
Dimensions & Weight:
- Approx. 4‑31/32″ × 2‑1/2″ × 1‑11/32″ (126 × 64 × 34 mm)
- Weight ~7 oz / 199 g
Certifications: UL recognized, CSA certified, meets EN60730 when panel‑mounted
Construction: NEMA‑1 enclosure with mounting holes; electrical access slots included
Applications: Ideal wiring base for 7800 series relays and annunciators in HVAC burners, industrial control panels, or wall‑mount installations

Honeywell – Q7800A1005 – 22-Terminal Universal Wiring Sub-Base