MPN

Littelfuse 1 A Resettable Fuse, 30 V dc

RS Stock No.:: 657-1772
Mfr. Part No.:: RHEF100
Manufacturer:: Littelfuse

This image is representative of the product range

Bulk discount available

Subtotal (1 pack of 5 units)*

PHP144.54

(exc. VAT)

PHP161.885

(inc. VAT)

FREE delivery for orders over ₱3,000.00

In Stock

75 unit(s) ready to ship from another location
Plus 165 unit(s) shipping from March 06, 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per Unit	Per Pack*
5 - 70	PHP28.908	PHP144.54
75 - 245	PHP28.042	PHP140.21
250 - 495	PHP27.204	PHP136.02
500 - 1245	PHP26.604	PHP133.02
1250 +	PHP26.026	PHP130.13

*price indicative

RS Stock No.:: 657-1772
Mfr. Part No.:: RHEF100
Manufacturer:: Littelfuse

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Littelfuse
	Trip Current	1.8A
	Product Type	Resettable Fuse
	Voltage	30 V dc
	Time to Trip	5.2s
	Current Rating	40 A
	Hold Current	1A
	Length	9.7mm
	Height	13.6mm
	Width	3 mm
	Minimum Resistance	0.18Ω
	Maximum Resistance	430mΩ
	Minimum Operating Temperature	-40°C
	Maximum Operating Temperature	60°C
	Power Dissipation	1.4W
	Standards/Approvals	TUV, RoHS, CSA, UL
	Series	RHEF
	Lead Orientation	Radial

	Select all
	Brand Littelfuse
	Trip Current 1.8A
	Product Type Resettable Fuse
	Voltage 30 V dc
	Time to Trip 5.2s
	Current Rating 40 A
	Hold Current 1A
	Length 9.7mm
	Height 13.6mm
	Width 3 mm
	Minimum Resistance 0.18Ω
	Maximum Resistance 430mΩ
	Minimum Operating Temperature -40°C
	Maximum Operating Temperature 60°C
	Power Dissipation 1.4W
	Standards/Approvals TUV, RoHS, CSA, UL
	Series RHEF
	Lead Orientation Radial

PolySwitch™ PTC Devices RHEF Series

PCB Wire Ended

All are UL, CSA, TUV approved

Protection of electrical and electronic circuits against excessive currents

Rapid switch from low resistance state to very high resistance with electrical overload or short circuit

Quick and automatic reset and return to low resistance state when fault condition corrected and power removed

Features:

Automatically resets itself thousands of times

Maintenance free

Small size and no fuseholder required

Main applications:

Security systems

Power supplies and transformers

Power switching devices

Automotive and medical equipment

Instrumentation and control

Computers and peripherals

Audio visual and telecommunications

Approvals

UL, CSA, TUV