Cooper Bussmann 6125TD dimensions 050 075 100

Title: Engineering Product Specification Telecom Circuit Protector					Revision: L
Printed on: 7/14/2003					Sheet 7	of	18
5.3 Time vs. Current Characteristic		(Measured with a Kepco constant current power supply)
5.3.1 For TCP500mA and TCP1.25A
	% of Amp Rating			Opening Time
	100%		4 Hours Minimum
	250%		1 Second Minimum
	250%		4 -10 Seconds Typical
	250%		120 Seconds Maximum
	300%*		10 Seconds Maximum

*If the device does not open at 250% within 120 seconds, increase current to 300% of amp rating. Device must open in 10 seconds maximum.

5.3.2 For TCP2A

Current Level	Opening Time
2.2A**	30 minutes minimum
7A	opens before Bussmann MDL-2
25A	opens before Bussmann MDL-2
40A	opens before Bussmann MDL-2
% of A mp Rating	Opening Time
100%	4 Hours M inimum
250%	1 Second M inimum
250%	4 -10 Seconds Typical
250%	120 Seconds M aximum
300%*	10 Seconds M aximum

*If the device does not open at 250% within 120 seconds, increase current to 300% of amp rating. Device must open in 10 seconds maximum.

** The TCP2A may have a maximum temperature rise of 100°C after carrying 2.2A for thirty minutes.

5.4 DC Cold Resistance		(Measured at 10% of rated current)
	Catalog Symbol		Resistance (ohms)
			Min.	Typ.	Max.
	TCP500mA		0.420	0.530	0.640
	TCP1.25A		0.107	0.128	0.150
	TCP2A		0.050	0.075	0.100

This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.