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Grey metal box with front handle and visible terminals

SIEMENS

SIEMENS Safety Disconnect Switch HF361N 30A 3PST NEMA 1

SKU CH-KRAB-CK2C3

A 30 A heavy-duty safety disconnect switch with 3PST contacts in a NEMA 1 enclosure for industrial power isolation

  • Product typeLight Switch
  • Safe maintenance with 30 A disconnect rating
  • Heavy-duty construction for hazardous conditions
  • NEMA 1 enclosure resists dust and water
  • 3PST contact form controls three circuits
  • Compatible with HR612 model number

Industrial Safety Disconnect

The SIEMENS HF361N is a heavy-duty safety disconnect switch rated at 30 A for industrial electrical systems. It uses a 3PST contact form to control three poles simultaneously, making it suitable for professionals who need to isolate power during maintenance or emergencies. The NEMA 1 enclosure provides a degree of protection against dust and light moisture in indoor environments. It is not designed for outdoor exposure or hazardous-location requirements.

Sustained Load Behaviour

Classified as heavy-duty, the switch is built to carry its 30 A rating continuously under normal indoor conditions without nuisance tripping. The 3PST mechanism opens all three poles cleanly to reduce arcing during repeated disconnect cycles. The NEMA 1 housing shields the contacts from settling dust that could increase resistance over time. It is not intended for applications demanding NEMA 3R, 4X or higher environmental sealing.

Installation Practicalities

The unit fits standard enclosures and connects with typical industrial wiring practices for 30 A circuits. Compatible manufacturer model number HR612 identifies the replacement lineage, so verifying the existing mounting pattern before ordering avoids rework. The 3PST contact form requires three-pole wiring; using it on a two-pole circuit leaves an unused pole that must be terminated safely. It is not suited for DC loads or low-voltage control circuits without separate verification.

How it compares

Measured against everything we stock in Electrical Switches & Dimmers, at today’s prices. Recalculated every night.

Price $197.99
Pricier than about 86% of the 791 comparable items (median $39.99).

Specifications

Product
Brand nameSiemens
Product typeLight Switch

Questions about this item

Does the 30 A heavy-duty switch run hot or make noise when left energised all day?

The HF361N is a passive disconnect device with no fan or active electronics, so it produces no audible noise and negligible heat during continuous operation.

What wiring and enclosure must already be in place for this NEMA 1 safety switch to install correctly?

You need a standard NEMA 1 indoor enclosure and three-phase supply conductors sized for 30 A that terminate on the 3PST contacts.

Will the HF361N mate with the older HR612 model mounting pattern I already have on the panel?

Yes, the manufacturer lists HR612 as a compatible model number, so the mounting footprint and contact arrangement match.

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