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ABB 1SDA068106R1 — MCCB 125-250A

ABB 1SDA068106R1 XT4N MCCB, 250 A, 690 V, 4-Pole

MPN1SDA068106R1

ABB XT4N 250 TMA MCCB, 250 A, 690 V, 4-pole, fixed thermal-magnetic trip unit, InN=50%.

$590.00Ref. price · indicative, final on quote
ABB 1SDA068106R1 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1SDA068106R1 — Identification
ParameterValue
Type designationXT4N 250 TMA 250-2500 4p F F InN=50%
Product typeDistribution Circuit Breakers
Trip unitTMA
1SDA068106R1 — Electrical
ParameterValue
Rated current (In)250 A
Nominal current (In)250
Number of poles4 poles
Rated uninterrupted current (Iu)250
Rated voltage (Ur)690 V
Rated frequency50 / 60 Hz
1SDA068106R1 — Mechanical
ParameterValue
Dimensions (W x D x H, in)XT4
Dimensions (L x W x H, cm)8.25cm x 14cm x 16cm
Weight3.1 Kg

Product details

250 A continuous, 690 V, 4-pole — the selectivity anchor

The 1SDA068106R1: Rated In and Iu both sit at 250 A, with a rated voltage of 690 V and 50/60 Hz.

TMA trip unit — fixed thermal-magnetic, InN=50%

The TMA trip unit is a fixed thermal-magnetic design — no interchangeable electronic trip modules, no adjustable I²t curves. The InN=50% marking on the type string indicates the neutral pole is rated at 50% of the phase current, which is standard for distribution MCCBs where the neutral carries only unbalanced load current, not full phase current.

Frequently asked questions

What is the lead time for 1SDA068106R1?

The estimated lead time is 2 to 4 weeks.

What does InN=50% mean on this breaker?

InN=50% means the neutral pole is rated at 50% of the phase current (125 A for a 250 A breaker). This is standard for distribution feeders where the neutral carries only unbalanced load, not full phase current. For applications requiring full-rated neutral (e.g., high harmonic content or UPS bypass), a breaker with 100% neutral rating is needed.

MPN
1SDA068106R1