Thermal Circuit Breakers, R58 Series

Features .250" (6.35mm) Quick Connect terminals Cannot be manually tripped Visual trip indicator Push button to reset breaker

Electrical Characteristics Electrical Characteristics (@ 25°C)
Calibration: Will continuously carry 100% of rating.
May trip between 101% and 144%, but must trip at 145% of rating at +25°C.
Maximum Operating Voltages: 50 VDC; 250 VAC, @ 50/60 Hz
Dielectric Strength: 1500VAC RMS
Resettable Overload Capacity: Ten times rated current
Interrupt Capacity: 2000 Amps @ 50VDC, 1000 Amps @ 250VAC

Mechanical Characteristics
Termination .250" (6.35mm) Quick Connect Terminals
NOTE: Soldering to terminals is not recommended.
Shock: Withstands to 10g
Endurance Cycling: Over 1000 cycles @ 200% of rated load
Vibration: Withstands to 10g @ 10 to 55 Hz.
Weight: Less than 1.5ozs. (42.5g)
NOTE: 30A and 35A devices NOT UL or CSA.

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Dimensional Drawings
D40 
Nut 

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Part Numbers

DC OPERATED
NTE Type No.	Current Rating (Amps)	Typical Resistance (Ohms)
R58-1A	1.0	1.35
R58-2A	2.0	0.32
R58-3A	3.0	0.18
R58-4A	4.0	0.10
R58-5A	5.0	0.026
R58-6A	6.0	0.026
R58-7A	7.0	0.020
R58-8A	8.0	0.020
R58-10A	10.0	0.014
R58-12A	12.0	0.010
R58-15A	15.0	0.010
R58-20A	20.0	0.006
R58-25A	25.0	0.005
R58-30A	30.0	0.004
R58-35A	35.0	0.004

Trip Times

1 to 4 Amp Types		5 to 35 Amp Types
Rated Load	Trip Times	Rated Load	Trip Times
100%	No Trip	100%	No Trip
145%	Trip in 1 Hr.	145%	Trip in 1 Hr.
200%	10 to 45 Sec.	200%	6.0 to 30 Sec.
400%	3.0 to 14 Sec.	400%	1.6 to 4.5 Sec.
600%	1.4 to 7.0 Sec.	600%	0.6 to 1.7 Sec.
800%	0.75 to 4.3 Sec.	800%	0.25 to 0.9 Sec.
1000%	0.5 to 3.4 Sec.	1000%	0.15 to 0.65 Sec.