Over-Current Protectors

Features

Fast Switching
No Electrical Noise
Virtually Unlimited Life
Self Resetting
No Contacts
Automatic Operation
Efficient

Description

Positive Temperature Coefficient thermistors are used in a wide variety of applications to protect sensitive components against Over-Current conditions. The PTC is unique in its ability to limit excess current during fault conditions, and then automatically reset to a normal operating mode when the fault is removed. Select a part from our Standard Over-Current Protectors or contact Spectrum Sensors & Controls engineering to design a PTC to meet your specific application requirements.

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Over-Current Protector Product Information
Part Number	V_max	R₂₅	I_ns	I_ms	D_max	Wire Diameter		Customize Solution
Part Number	Maximum Voltage	Resistance at 25°C (±20%)	Maximum No Switch Current	Minimum Must Switch Current	Maximum Diameter	Wire Diameter		Customize Solution
	(volts)	Ω	(Amps)	(Amps)	(in.)	(in.)	AWG#
P6004A120X080F	15	0.8	0.89	1.58	.650	.025	22
P5504A120X100F	15	1.0	0.77	1.37	.600	.025	22
P4004A120X200F	15	2.0	0.46	0.82	.450	.020	24
P6006C120X500F	50	5	0.36	0.63	.650	.025	22
P4006C120X101F	50	10	0.21	0.37	.450	.025	22
P3006C120X201F	50	20	0.13	0.23	.350	.020	24
P6010D120X700F	132	7	0.31	0.55	.650	.025	22
P5510D120X101F	132	10	0.25	0.45	.600	.025	22
P3510D120X251F	132	25	0.13	0.23	.400	.025	22
P2510D120X501F	132	50	0.08	0.15	.300	.020	24
P2010D120X102F	132	100	0.05	0.10	.250	.020	24
P4015E120X251F	265	25	0.14	0.25	.450	0.25	22
P3015E120X501F	265	50	0.09	0.16	.350	0.20	24
P2015E120X102F	265	100	0.06	0.10	.250	0.20	24
P3520F120X501F	400	50	0.10	0.18	.400	0.25	22
P2520F120X102F	400	100	0.06	0.11	.300	0.20	24
Notes: Maximum Voltage listed as DC or 60 Hz. AC. Maximum No Switch Current (I_ns) is the maximum current that the PTC can pass without switching into its high resistance state. Minimum Must Switch Current (I_ms) is the minimum current that is necessary to switch the PTC into its high resistance state. I _ns is calculated at the maximum ambient temperature, while I_ms is determined at the minimum ambient temperature. For Spectrum Sensors & Controls standard products, Ta_min is 0ºC and Ta_maxis 50ºC.