Reed Sensors
Firecracker > 59025
59025 Firecracker Reed Sensor + 57025 Actuator
Description
The 59025 Firecracker Reed Sensor is a small cylindrical reed sensor, 25.4mm (L)
x 6.22mm (Dia.) (1.00 x 0.245), with a choice of normally open, normally closed
or change-over contacts. It is capable of switching up to 265Vac/300Vdc
at 10VA. The 59025 Firecracker Reed Sensor is available with a range of
sensitivity and cable length options. It functions best with the 57025 actuator.
Note: The 57025 Actuator is sold separately.
Features
Customer-defined sensitivity option
Magnetically-operated proximity
Custom cable length and connector
sensor
options available
Hermetically sealed contacts
Operates through non-ferrous
materials such as wood, plastic
or aluminum
Agency Approvals
Agency Agency File Number
Benefits
Ideal for battery-powered
E61760 Fits nicely into small confined
applications as the contacts do not
spaces
draw power when in the non-
Quick and easy to install
Note: Contact Littelfuse for specific agency approval ratings.
activated state
Well suited for usage in high-
Reed contacts last for millions of
moisture and contaminated
operating cycles under micro-
environments
Dimensions
controller logic level loads
Non-contact solution, aesthetically
Dimensions in mm (inch)
more appealing than push-button or
lever mechanical-type switches
A
Applications
Position and limit sensing Level sensing
A
Security Linear actuators
B C
A B C
Nom. Nom. Nom.
57025 Actuator 6.22 (.245) 25.40 (1.000) --
Cable Length
59025 Sensor
6.22 (.245 25.40 (1.000)
10.00 (.393)
2015 Littelfuse Revised: 10/29/15 littelfuse.com
Specifications are subject to change without notice.Reed Sensors
Firecracker > 59025
59025 Firecracker Reed Sensor + 57025 Actuator
Electrical Ratings
Normally Open
Contact Type Normally Open Change Over Normally Closed
HighVoltage
Switch Type 1 2 3 4
1
Contact Rating VA/Watt - max. 10 10 5 5
2
Switching Vdc - max. 200 300 175 175
4
Voltage Vac - max. 140 265 120 120
3
Breakdown Vdc - min. 250 400 200 200
2
Switching Adc - max. 0.5 0.4 0.25 0.25
4
Current Aac - max. 0.35 0.30 0.18 0.18
Carry Adc - max. 1.2 1.4 1.5 1.5
Contact, Initial - max. 0.2 0.2 0.2 0.2
5
Resistance
10 10 9 9
Insulation - min. 10 10 10 10
Capacitance Contact pF - typ. 0.3 0.2 0.3 0.3
Temperature Operating C -40 to +105 -20 to +105 -40 to +105 -40 to +105
Product Characteristics
6
Operate Time ms - max. 1.0 3.0 3.0
6
Release Time ms - max. 1.0 3.0 3.0
7
Shock 11ms 12 sine G - max. 100 50 50
7
Vibration 50-2000 Hz G - max. 30 30 30
Notes:
1. Contact rating - Product of the switching voltage and current should never exceed the wattage rating. Contact Littelfuse for additional load/life information.
2. When switching inductive and/or capacitive loads, the effects of transient voltages and/or currents should be considered. Refer to Application Notes AN108A and AN107 for details.
3. Breakdown Voltage - per MIL-STD-202, Method 301. Leakage current is less than 0.1mA for 60 seconds.
4. Electrical Load Life Expectancy - Contact Littelfuse with voltage, current values along with type of load.
5. This resistance value is for 11.81mm wire length. Resistance changes when wire lengthens.
6. Operate (including bounce)/Release Time - per EIA/NARM RS-421-A, diode suppressed coil (Coil II).
7. Shock and Vibration - per EIA/NARM RS-421-A and MIL-STD-202.
8. For custom modifications to the wire length or size, or adding a special connector, please contact Littelfuse.
9. Custom sensitivities and a high voltage switch are options
Sensitivity Options (Using 57025 Actuator)
Select Option S T U V
Activate Distance Activate Distance Activate Distance Activate Distance
Pull-In AT Pull-In AT Pull-In AT Pull-In AT
Switch Type mm (inch) mm (inch) mm (inch) mm (inch)
Range Range Range Range
Average Average Average Average
1 Normally Open 12-18 7.9 (.311) 17-23 6.2 (.244) 22-28 4.9 (.193) 27-33 4.2 (.165)
2 High Voltage -- -- 17-23 6.2 (.244) 22-28 4.9 (.193) 27-33 4.2 (.165)
3 Change Over 15-20 7.2 (.283) 20-25 5.7 (.224) 25-30 4.7 (.185) -- --
4 Normally Closed 15-20 7.2 (.283) 20-25 5.7 (.224) 25-30 4.7 (.185) -- --
Note:
1. Pull-In AT Range: These AT values are the bare reed switch AT before modification.
2. The activation distance is average value on the final sensor assembly.
Schematics Switch Type
Black
Sensor Actuator
1
Black
Black
Blue 3
White
Black
4
D Black
2015 Littelfuse Revised: 10/29/15 littelfuse.com
Specifications are subject to change without notice.