POSITIVE TEMPERATURE COEFFICIENT (PTC2) HEATER MANUAL
PTC2 Heater Systems are manufactured and distributed by Waukesha
®
Service & Components, a division of SPX Transformer Solutions, Inc.
PTC2-Manual Rev. 1.3, 04/2013
5
INSTALLATION (continued)
HEATHER FUSING
PTC2 heaters do not include fuse protection and should be fused at the wiring supply source. Inrush curves
are shown in Charts 2 and 3 below:
Suggested MCB Rating:
6A Type B
Suggested Fuse Rating:
6.3A Type (T) Time Delay
Chart 2 – Inrush Current at 230 VAC
Chart 3 – Inrush Current at 120 VAC