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SPCD 3D53-AB

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The ABB SPCD 3D53-AB Differential Unit is a high-precision protection device designed to detect differential currents in three-phase systems. It is typically rated for 1A or 5A and operates at standard 50/60 Hz frequencies.
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Technical specifications for SPCD 3D53-AB

  • Manufacturer:
    ABB
  • Part Number:
    SPCD 3D53-AB
  • Product Family:
    ABB Procontic
  • Product Numbers:
    SPCD 3D53-AB
  • Product Type:
    Differential Unit
  • Rated Current (In):
    Typically 1A or 5A
  • Frequency:
    50/60 Hz
  • Harmonic Restraint:
    2nd/5th harmonic blocking
  • Number of phases:
    3
  • Trip contacts:
    Normally 4–6 changeover
  • Rated load:
    5A @ 250V AC/DC
  • Operating Temperature:
    -25°C to +55°C
  • Humidity:
    Up to 95% non-condensing
  • Weight:
    0.16 kg
  • Estimated shipping dimensions:
    18x12.7x4cm
  • Tariff Code:
    8537101190
  • Country of origin:
    Sweden
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.
Description
The ABB SPCD 3D53-AB Differential Unit is a high-precision protection device designed to detect differential currents in three-phase systems. It is typically rated for 1A or 5A and operates at standard 50/60 Hz frequencies, making it suitable for industrial and commercial power distribution applications. The unit features 2nd and 5th harmonic blocking, enhancing its reliability by preventing false trips caused by transformer inrush currents or other transient events.

Equipped with 4–6 normally changeover trip contacts rated at 5A @ 250V AC/DC, the SPCD 3D53-AB ensures secure signaling to circuit breakers or alarms during differential current events. Its compact design supports easy integration into existing protection schemes and control panels.Designed to operate in demanding environments, the unit functions reliably within an operating temperature range of -25°C to +55°C and can tolerate up to 95% non-condensing humidity, ensuring stable performance even under variable industrial conditions.

With its precise detection, harmonic restraint, and robust trip capabilities, the ABB SPCD 3D53-AB Differential Unit provides dependable protection for three-phase systems, helping prevent equipment damage and maintaining operational safety.
Alternative Names
SPCD 3D53-A8 3D53-A8 3D53-AB SPCD SPCD 3D53A8 SPCD 3D53AB
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Does the SPCD 3D53-AB come with a warranty?
Yes, the SPCD 3D53-AB includes a free 1-year Apter Power warranty.
Which frequencies does it support?
It operates at 50/60 Hz.
What is the rated current of the differential unit?
The unit is typically rated for 1A or 5A.
How many trip contacts are available and what is their rating?
It has 4–6 normally changeover contacts, rated at 5A @ 250V AC/DC.

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