PTC Heaters for Constant Battery Discharge

KLC Corporation introduces a high power, compact heater design that utilizes proven ceramic PTC technology to act as the constant power resistor for battery discharge tests. The PTC thermistors used in this high power heater are self-regulating elements that can operate at a nearly constant power over a wide range of voltage and environmental conditions.

Features of the new PTC auxiliary heater models

• Multiple heater stages are possible. Single-stage mini-heaters for decentralized heating can be produced just as readily as powerful four- or five-stage heaters with electronic control
• Twice the thermal safety and longer service life: In all high-output models, the switching elements and the PC boards are thermally isolated from each other by a bus bar; in addition, an excess temperature cut-out is incorporated into the PTC electronics
• Shorter development times for customer-specific applications and reduced tooling manufacturing time
• Withstands external electric shock

Recommended Models

• All models with current (A) > 15A will have 6 terminals.
• Please refer to individual PTC air heater models for more detailed specifications and Model numbering convention. (Links available in section below)
• Low voltage PTC air heaters will have higher current, hence are not recommended to use in conjunction with high power(W) specifications.
• The PTC air heaters designed for automobiles are specially designed with stronger endurance and higher safety standard.

Example A : Battery Discharge Capacity Tester

Cabin Temperature Test with PTC Air Heater

Voltage: 72V
PTC Length: 128mmL
Ambient Temperature: -18℃

Other Related Information

Click on the following images for more detailed specifications:

Available PTC Models
MH Type	MSH Type	SH Type	OH Type
Available Frames (Recommended Accessories)
MHF-93	MSHF	MSHF-70	MHF-90

PTC Air Heater Models
Models	Dimension (mm)	Tube No.	Fin Width (mm)	Fin Pitch (mm)	Standard	Wired
MH	26mm x 90mm x L L(mm) : 70, 93, 106, 128, 150, 185, 202, 225, 268, 314, 358, 403, 446, 492	2 or 3	90	1.2 2.0 2.6
MSH	26mm x 65mm x L L(mm) : 70, 93, 106, 128, 150, 185, 202, 225, 268, 314, 358, 403, 446, 492	3	65	1.68 2.6
SH	26mm x 65mm x L L(mm) : 70, 93, 106, 128, 150, 185, 202, 225, 268, 314, 358, 403, 446, 492	2	65	1.68
TH	26mm x 45mm x L L(mm) : 70, 93, 106, 128, 150, 185, 202, 225, 268, 314, 358, 403, 446, 492	2	45	2.0
OH	26mm x 30mm x L L(mm) : 30, 50, 70, 93, 106, 128, 150, 185, 202, 225, 268, 314, 358, 403, 446, 492	1	30	1.68
SS	22 x 22.3 x 15mm ~ 361 x 267.6 x 15mm