Fostoria DC-SK-1 Disconnect Switch 6 In W 4 In D HVAC Control
Unit-mounted disconnect switch rated 50 A at 120–600 V AC for FHK and MR heater controls
- 600 V AC rating handles heavy-duty HVAC loads
- 50 A capacity supports high-current heating equipment
- Unit-mounted design simplifies installation in FHK and MR units
- 6 in by 4 in footprint fits standard control enclosures
- Compatible with FHK-2, FHK-4, FHK-13, FHK-6, MR-13, MR-27, MR-4, MR-6
Application fit
The Fostoria DC-SK-1 disconnect switch is built for unit-mounted installation on compatible FHK and MR series heaters. It handles 50 A across a 120 to 600 V AC range and fits a 6 in by 4 in footprint with a 5 in overall height. Electricians and HVAC technicians specifying factory-authorised disconnects for these heater models will find the correct voltage and amperage rating in a single component.
Upgrade context
This switch replaces a missing or damaged factory disconnect on the listed FHK-2, FHK-4, FHK-13, FHK-6, MR-13, MR-27, MR-4 and MR-6 heaters. The jump is worth it when the original disconnect no longer meets the 600 V AC rating or when code requires a dedicated unit-mounted means of isolation. It is not for heaters outside the listed model series or for applications exceeding the 50 A rating.
Sustained operation
Under continuous load the switch maintains its 50 A, 600 V AC rating without derating for the 120 to 600 V AC range. The unit-mounted design keeps the disconnect close to the heater terminals, minimising voltage drop during extended heating cycles. It is not for installations where the available fault current exceeds the switch's interrupting capacity or where a different mounting style is required.
How it compares
Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.
- Price $288.99
- Pricier than about 90% of the 1,762 comparable items (median $45.99).
Specifications
| Product | |
|---|---|
| Brand name | FOSTORIA |
Questions about this item
What are the overall width and depth dimensions of the Fostoria DC-SK-1 disconnect switch?
The switch has an overall width of 6 inches and an overall depth of 4 inches, with a height of 5 inches for unit-mounted installation.
How is the DC-SK-1 disconnect switch mounted and wired to the compatible heaters?
It is a unit-mounted switch rated for 50 amps at 120 to 600 volts AC, designed for direct mounting on FHK and MR series heaters with wiring to the unit terminals.
Which heater models are compatible with this disconnect switch for future maintenance or replacement?
The DC-SK-1 is rated for use with FHK-2, FHK-4, FHK-6, FHK-13, MR-4, MR-6, MR-13, and MR-27 heater models.
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