7401-4658 Datasheet PDF - Esterline
| Part Number | 7401-4658 | |
| Description | CONTACTOR | |
| Manufacturers | Esterline | |
| Logo |  |
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There is a preview and 7401-4658 download ( pdf file ) link at the bottom of this page. Total 12 Pages | ||
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ENGINEERING DATA SHEET
7401-4658
CONTACTOR
1PST-DM, 400 AMP
Non latching solenoid design power contactor
Qualified to
MIL-PRF-6106
MS24185-D1
AN-3380-1
PRINCIPLE TECHNICAL CHARACTERISTICS
Contacts rated at
400 Amps / 28 Vdc
Weight
1180g max.
Dimensions of case
139.7mm x 62mm x 44.3mm max.
Special units available upon request.
APPLICATION NOTES:
101
102
103G
007
CONTACT ELECTRICAL CHARACTERISTICS
Minimum operating cycles
Contact rating per
pole and load type
50,000 cycles
50,000 cycles
50,000 cycles
resistive
inductive (L/R=5ms)
motor
50,000 cycles
minimum current (Amps)
Load Current in Amps
@28Vdc
400
100
400
40
Featuring LEACH© power and control solutions
www.esterline.com
AMERICAS
6900 Orangethorpe Ave.
P.O. Box 5032
Buena Park, CA 90622
.
.
Tel: (01) 714-736-7599
Fax: (01) 714-670-1145
EUROPE
2 Rue Goethe
57430 Sarralbe
France
.
.
Tel: (33) 3 87 97 31 01
Fax: (33) 3 87 97 96 86
ASIA
Units 602-603 6/F Lakeside 1
No.8 Science Park West Avenue
Phase Two, Hong Kong Science Park
Pak Shek Kok, Tai Po, N.T.
Hong Kong
Tel: (852) 2 191 3830
Fax: (852) 2 389 5803
Data sheets are for initial product selection and comparison. Contact Esterline Power Systems prior to choosing a component.
Date of issue: 6/06
- 153 -
Page 1 of 4
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Application notes
N°101
DERATING OF CONTACTS FOR DC VOLTAGES
ABOVE NOMINAL RATING
To establish a standard for the derating of relay contacts is, at best, a subjective practice. Limitations are governed by the type
of relay, contact gap, maximum voltage capabilities of the relay contact system, and the contact material.
The most common method is to derate the contacts by use of the Power Formula, using the known current and voltage.
This method is valid only for Resistive Loads, and is an approximation only; keeping in mind the limitations mentioned above.
Power = IE (Current x Voltage)
I2 E2 = 2/3 I1E1
Example:
A designer is working with a 55 volt DC system and has a relay rated at 10 amps resistive at 28 volts DC.
What is the maximum current that can be switched at 55 Vdc.
I1 = 10 Amperes
E1 = 28 VDC
E2 = 55 VDC
I2 = ? (Current ratings at 55 VDC Resistive)
I2 E2 = 2 I1 E1/3
I2 = 2 I1 E1/E23
= 2 (10 x 28)/55 x 3
= 560/165
I2 = 3.4 Amperes at 55VDC
In addition, the user should always be concerned about the following:
1. Derating contacts that are rated for less than 10 Amperes at nominal voltage.
2. Derating contacts for use in system voltages above 130 Volts DC
Date of issue: 6/00
- 14 -
Page 1 of 1
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| Information | Total 12 Pages | |
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| Download | [ 7401-4658.PDF Datasheet ] | |
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