The ZSK-765 is Harvia's overheating limiter switch, also called a high limit control. Harvia lists it as the replacement for the older ZSK-764, so if your heater's parts list shows ZSK-764, this is the current part.

Which heaters it fits

Harvia's datasheets for the KIP45B and KIP80B list the ZSK-764 overheating limiter switch, one per heater, which this part replaces. For other KIP models, check the parts list for your heater before replacing it.

Before you install

It's part of the heater's safety wiring, so have a licensed electrician fit it with the power off at the breaker.

Specifications

• Harvia part number: ZSK-765 (SPZSK-765), replaces ZSK-764
• Type: overheating limiter switch (high limit control)
• Fits: Harvia KIP45B and KIP80B, 1 per heater
• Size: 1.77 x 1.38 x 1.57 in
• Weight: 0.2 lbs
• Certification: UL