Definitions  
					Voltage Rating for Telecom Devices  
					Agency approvals for PolySwitch devices:  
					I
					= Hold current—maximum current at which the  
					For Raychem Circuit Protection telecom  
					devices (TC, TGC, TRx, TSx) there are  
					two applicable voltage ratings. These are  
					PolySwitch devices, where appropriate,  
					have been tested and have gained the  
					following safety agency approvals:  
					• UL Component Recognition in Category  
					XGPU2, Thermistor Type Devices  
					• CSA Component Acceptance Class  
					9073 32, Thermistors—PTC Type  
					H
					device will not trip under specified conditions at  
					20°C unless otherwise specified.  
					V
					Operating and V  
					Interrupt. To  
					max.  
					max.  
					I
					= The highest fault current that can safely  
					help understand the nature of these two  
					different voltage ratings the following  
					definitions are provided:  
					max.  
					be used to trip a PolySwitch device under  
					specified conditions.  
					¨
					• TUV Rheinland Certification, PTC  
					V
					= The highest voltage that can safely be  
					V
					Interrupt: Under specified  
					max.  
					Resistors  
					max.  
					dropped across a PolySwitch device  
					continuously in its tripped state under specified  
					fault conditions.  
					conditions this is the highest voltage  
					that can be applied to the device at the  
					maximum current. Devices have been  
					designed to trip safely under higher power  
					level cross conditions, as listed above, to  
					assist equipment in meeting the  
					®
					R max. = Maximum device resistance under  
					1
					®
					specified conditions measured 1 hour post trip or  
					post reflow.  
					appropriate industry conditions.  
					R max. = Maximum device resistance under  
					automotive conditions specified in PS400  
					measured 1 hour after stress has been removed.  
					V
					Operating: For telecom devices  
					a
					max.  
					this is the voltage we have used to obtain  
					component recognition under UL1434.  
					Most Raychem Circuit Protection devices  
					(TC, TGC, TRx, TSx) are certified at 60V  
					but can withstand higher Vmax. TR600 and  
					TS600 product families are certified at  
					250V but can withstand higher Vmax.  
					Interrupt conditions as noted above.  
					Rmax. Initial = Maximum device resistance  
					under specified conditions as supplied.  
					I
					= Minimum current at which a device will trip  
					T
					under specified conditions.  
					For the purposes of this brochure we have  
					included in the table of electrical ratings  
					WARNING!  
					the more applicable V  
					Interrupt value.  
					max.  
					• Operation beyond maximum ratings or improper  
					use may result in device damage and possible  
					electrical arcing and flame.  
					• These devices are intended for protection  
					against occasional overcurrent or overtemper-  
					ature fault conditions, and should not be used  
					when repeated fault conditions are anticipated.  
					• TR and TS devices are not intended for contin-  
					uous utility line voltage such as 120/220V or  
					240V.  
					• LVR Product Notes:  
					Standard PolySwitch product families  
					include, RGEF, RHEF, RTEF, RUEF, RXEF,  
					LVR, SMDF, nanoSMDF, microSMDF,  
					miniSMDF, BBRF, LR4F, LTPF, SRPF,  
					VTPF, VLRF, VLPF, AHRF, AGRF, and  
					AHS. PolySwitch TS, TR and ASMD  
					product families offer a selected number of  
					RoHS compliant parts. In addition, special  
					devices, such as speaker devices (SPK),  
					terminal devices (TD) and custom chip  
					devices, can be manufactured to meet  
					performance requirements that could be  
					outside of the performance band of the  
					standard products listed in this short form  
					catalog. Please contact a Raychem Circuit  
					Protection Customer Service representative  
					to discuss your special product needs.  
					1. A PTC device is not a fuse—it is a nonlinear  
					thermistor that limits current. Because under a  
					fault condition all PTC devices go into a high  
					resistance state but not open circuit, hazardous  
					voltage may be present at PTC locations.  
					2. The devices are intended for protection  
					against occasional overcurrent or  
					overtemperature fault conditions and should not  
					be used when repeated fault conditions or  
					prolonged trip events are anticipated.  
					3. Please refer to the SCD for complete  
					information and applications limitations, which  
					can be obtained from product management  
					(650-361-6900) or the web:  
					www.circuitprotection.com/lvr/  
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