Overview
The Square D H361 /F1 is a heavy-duty fusible safety disconnect switch designed for reliable power isolation in industrial, commercial, and HVAC applications. This 3-pole, 3-wire switch supports 30 amps at 600 volts AC/DC with a NEMA 1 steel enclosure. It features fusible protection compatible with Class H/J/K/L/R fuses and a quick-make, quick-break operating mechanism. The switch is engineered for wall-mounted, indoor use and provides reliable service entrance and branch circuit protection.
Key Features
- Visible blade for easy status confirmation and quick-make, quick-break mechanism that operates within milliseconds
- Does not include a neutral bar and is suitable for service entrance when equipped with optional neutral or grounding kits
- 200kA AIC short circuit current rating
- Dual cover interlock and color-coded indicator handle
- Comes with mechanical lugs standard
- UL Listed and NEMA 1 rated for general-purpose indoor applications
Technical Specifications
- Ampere Rating: 30A
- Voltage Rating: 600V AC/DC
- Number of Poles: 3-Pole, 3-Wire
- Disconnect Type: Fusible
- Fuse Class: H, J, K, L, R compatible
- Short circuit current rating: 10kA to 200kA
- Dimensions: 14.6 in (H) x 7.55 in (W) x 4.87 in (D)
- Weight: 3.65 lb
- Enclosure Material: Steel, general purpose (indoor)
- Terminal Type: Mechanical lugs
- Action: Single Throw
- Mounting: Surface mount, wall-mounted
Typical Applications
The H361 is ideal for use in commercial buildings, factories, and HVAC installations, ensuring safe and effective control and isolation of electrical circuits. Common applications include:
- Service entrance disconnect for branch circuits
- Industrial equipment motor control and isolation
- Commercial power distribution panels
- HVAC system disconnects
- General-purpose load switching and protection
Compatibility & Replacements
Compatible With
- Square D F-Series safety switch family
- Class H, J, K, L, and R fuses (5–30A rating range)
- Standard three-phase power distribution systems
- NEMA 1 enclosure frame applications
Replaces / Drop-In Replacement For
- Square D H361N (with neutral bar variant)
- Square D Series F safety switches rated 30A at 600V
- Legacy general-duty fusible disconnect switches in the 30A 600V class
Works With
- R-class, J-class, K-class, H-class fuses (standard industrial protection)
- Standard electrical service entrance configurations
- Industrial control circuits and motor branch circuits
