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Electronic overload relays

Overload relay Siemens SIRIUS 3RB31234SB0
Overload relay Siemens SIRIUS 3RB31234SB0
Overload relay for motor protection, 3-12 A, Size S0, CLASS 5-30, Screw connection, Auxiliary contacts 1 x NC/NO, Manual/automatic reset, Internal earth-fault detection
Item number: 101367
MSRP: $302.00
$241.60
plus sales tax plus shipping
in stock
Shipping the next business day
Overload relay Siemens SIRIUS 3RB31234PB0
Overload relay Siemens SIRIUS 3RB31234PB0
Overload relay for motor protection, 1-4 A, Size S0, CLASS 5-30, Screw connection, Auxiliary contacts 1 x NC/NO, Manual/automatic reset, Internal earth-fault detection
Item number: 101366
MSRP: $302.00
$241.60
plus sales tax plus shipping
in stock
Shipping the next business day
Overload relay Siemens SIRIUS 3RB31234QB0
Overload relay Siemens SIRIUS 3RB31234QB0
Overload relay for motor protection, 6-25 A, Size S0, CLASS 5-30, Screw connection, Auxiliary contacts 1 x NC/NO, Manual/automatic reset, Internal earth-fault detection
Item number: 101368
MSRP: $302.00
$241.60
plus sales tax plus shipping
in stock
Shipping the next business day
Overload relay Siemens SIRIUS 3RB31134PB0
Overload relay Siemens SIRIUS 3RB31134PB0
Overload relay for motor protection, 1-4 A, Size S00, CLASS 5-30, Screw connection, Auxiliary contacts 1 x NC/NO, Manual/automatic reset, Internal earth-fault detection
Item number: 101361
MSRP: $279.00
$223.20
plus sales tax plus shipping
in stock
Shipping the next business day
Overload relay Siemens SIRIUS 3RB31134SB0
Overload relay Siemens SIRIUS 3RB31134SB0
Overload relay for motor protection, 3-12 A, Size S00, CLASS 5-30, Screw connection, Auxiliary contacts 1 x NC/NO, Manual/automatic reset, Internal earth-fault detection
Item number: 101362
MSRP: $279.00
$223.20
plus sales tax plus shipping
in stock
Shipping the next business day
Overload relay Siemens SIRIUS 3RB31134TB0
Overload relay Siemens SIRIUS 3RB31134TB0
Overload relay for motor protection, 4-16 A, Size S00, CLASS 5-30, Screw connection, Auxiliary contacts 1 x NC/NO, Manual/automatic reset, Internal earth-fault detection
Item number: 101363
MSRP: $279.00
$223.20
plus sales tax plus shipping
in stock
Shipping the next business day
Overload relay Siemens SIRIUS 3RB31234RB0
Overload relay Siemens SIRIUS 3RB31234RB0
Overload relay for motor protection, 0.1-0.4 A, Size S0, CLASS 5-30, Screw connection, Auxiliary contacts 1 x NC/NO, Manual/automatic reset, Internal earth-fault detection
Item number: 101364
MSRP: $302.00
$241.60
plus sales tax plus shipping
in stock
Shipping the next business day
Overload relay Siemens SIRIUS 3RB31234NB0
Overload relay Siemens SIRIUS 3RB31234NB0
Overload relay for motor protection, 0.32-1.25 A, Size S0, CLASS 5-30, Screw connection, Auxiliary contacts 1 x NC/NO, Manual/automatic reset, Internal earth-fault detection
Item number: 101365
MSRP: $302.00
$241.60
plus sales tax plus shipping
in stock
Shipping the next business day
Overload relay Siemens SIRIUS 3RB31234VB0
Overload relay Siemens SIRIUS 3RB31234VB0
Overload relay for motor protection, 10-40 A, Size S0, CLASS 5-30, Screw connection, Auxiliary contacts 1 x NC/NO, Manual/automatic reset, Internal earth-fault detection
Item number: 101369
MSRP: $376.00
$300.80
plus sales tax plus shipping
in stock
Shipping the next business day
Monitoring relay Siemens SIRIUS 3RR21411AA30
Monitoring relay Siemens SIRIUS 3RR21411AA30
Monitoring relay, Apparant/active current monitoring 1.6...16 A, 20...400 Hz, 2-phase Supply, Monitoring for Current overshoot and undershoot, Phase failure, Cable break
Item number: 401044
MSRP: $215.00
$167.70
plus sales tax plus shipping
in stock
Shipping the next business day
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25

Operating principle of electronic overload relays

As overload relays are an indispensable component to protect your motor, and your machine, advancements have been made to improve the technology through the years. While thermal overloads were previously used exclusively, they were imperfect in that they could be affected by changes in ambient temperature. Electronic overload relays do not use a thermal method of detection so are therefore unaffected by this issue, and are as a result more accurate.

Applications for electronic overload relays:

  • Motor overload
  • Phase failure

 

Order electronic overload relays online from Automation24

At Automation24, we offer a wide variety of electronic overload relays at excellent prices available online from Siemens. Choose the ideal overload for your application today. Like overload relay Siemens SIRIUS 3RB31134PB0 with a current range of 1-4 A, and integrated NO/NC auxiliary contact. For higher current applications, look no further than overload relay Siemens SIRIUS 3RB31234VB0 with a 10-40 A range and integrated NO/NC auxiliary contact. All offered electronic overload relays can be matched with a corresponding main contactor.

At Automation24, we offer electronic overload relays at excellent prices. Select the perfect overload for your application today!

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