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ABB XT1SU3070AFF000XXX — Molded Case Circuit Breakers (MCCB)

ABB XT1SU3070AFF000XXX XT1S 125 MCCB, 70 A, 3P, 35 kA

MPNXT1SU3070AFF000XXX

ABB XT1S 125 series molded case circuit breaker, order code XT1SU3070AFF000XXX, 70 A, 3-pole, 480 VAC, 35 kA interrupting rating, panel mount.

ABB XT1SU3070AFF000XXX datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

XT1SU3070AFF000XXX — Specifications
ParameterValue
Amps70
Poles3
MountingPanel
Volts AC480
Breaking capacity35 kA

Product details

70 A MCCB with 35 kA interrupting capacity

The ABB XT1SU3070AFF000XXX is a 3-pole molded case circuit breaker from the XT1S 125 series, rated 70 A continuous at 480 VAC. Panel-mount construction suits enclosure-based distribution, not DIN-rail assembly.

The 70 A thermal-magnetic trip unit (TMF 70-700) provides fixed thermal and magnetic settings. For selective coordination downstream, verify that the instantaneous pickup of this breaker clears faults before the upstream device trips — the 35 kA SCCR gives headroom for most industrial panels. The 3-pole construction covers three-phase loads; the neutral is not switched.

Panel integration

Panel-mount design requires a cutout and four mounting screws — no DIN rail adapter. The XT1S 125 frame accepts plug-in accessories (auxiliary contacts, shunt trip, undervoltage release) that snap into the front accessory slot without removing the breaker. Torque terminals to the manufacturer's specification; the line and load lugs accept copper or aluminum conductors.

Frequently asked questions

Where can I buy XT1SU3070AFF000XXX and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What is the closest functional second-source for XT1SU3070AFF000XXX?

The peer XT1NU3090AFF000XXX is the same XT1S 125 frame and 3-pole construction but rated 90 A instead of 70 A. It will not drop into a panel specified for 70 A without re-evaluating the load and coordination study — the higher amp rating changes the trip curve and may require upstream device adjustment. For a direct 70 A replacement, the XT1SU3070AFF000XXX is the correct order code.

What are the key ratings of XT1SU3070AFF000XXX?

70 A continuous, 3-pole, 480 VAC, 35 kA interrupting rating at 480 V. Panel mount. Thermal-magnetic trip (TMF 70-700).

Will XT1SU3070AFF000XXX drop into a panel specified around XT1NU3090AFF000XXX without rewiring?

No — the 90 A peer has a higher continuous rating and different trip calibration. The physical frame and mounting pattern are the same, but the breaker's protective settings are mismatched for a circuit designed for 70 A. Use the XT1SU3070AFF000XXX for 70 A applications.

MPN
XT1SU3070AFF000XXX