Air Circuit Breaker Datasheet and Technical Document Download Guide

15 May, 2026
Posted by: Muhammet KUL

What is an air circuit breaker datasheet? An air circuit breaker datasheet is a manufacturer-issued technical document specifying an ACB's rated current (typically 630–6300 A), rated ultimate short-circuit breaking capacity (Icu), voltage class, and trip unit characteristics in accordance with IEC 60947-2 or ANSI/IEEE C37. Relying on catalog summaries instead of verified datasheet values risks mismatched Icu/Ics coordination, non-compliant protection curves, or procurement of a device that fails type-test requirements under fault conditions. This guide covers authoritative ACB datasheet download sources, critical datasheet fields for selection, cross-manufacturer format comparison, catalog-to-application cross-referencing, and practical sizing calculations.

Why ACB Datasheets Matter More Than You Think

In our experience reviewing tender submissions for industrial substations, roughly one in three rejected designs traces back to an outdated ACB datasheet. An engineer downloads a PDF from a third-party reseller, sizes the busbar to a 65 kA Icu rating, and only at factory acceptance test discovers the actual revision is rated 50 kA. The breaker is identical in part number — the rating was downgraded by the manufacturer two years prior to harmonize with revised IEC 60947-2 Clause 8.3.5 short-circuit verification.

This is not a theoretical risk. ABB, Schneider Electric, and Siemens all publish errata and revision notes that affect previously released catalog data. The ABB 1SDA070701R1 E1.2B 630 Ekip Dip LI has gone through several documentation updates since its launch, with refinements to the trip unit firmware version table and the Icw (short-time withstand) rating notation.

Datasheet revision (Rev.) is defined as the manufacturer-controlled document version identifier indicating publication date and applicable serial-number range, governed by ISO 9001 §8.5.6 change-control requirements. A datasheet without a revision stamp should be treated as untraceable.

Key takeaway: Always download datasheets directly from the OEM portal or an authorized distributor like Stoklink, and verify the revision date is within 12 months of your project specification freeze.

Where to Download Authoritative ACB Datasheets

Primary OEM Sources

For ABB SACE Emax 2 and Tmax T-series breakers, the canonical ACB datasheet source is ABB Library (library.abb.com), where each part number resolves to a technical catalog (document type 1SDC...), an installation manual, and a Declaration of Conformity. Schneider Electric publishes through se.com under "Documents and Downloads" with filtering by Masterpact MTZ family. Siemens uses the SIOS portal for 3WL and 3WT series.

Authorized Distributors

Distributors who carry stock typically mirror datasheets alongside live inventory. The Stoklink air circuit breakers collection attaches the manufacturer PDF to each listing — for example, the ABB 1SDA070741R1 E1.2B 800 page links directly to the ABB 1SDC200023D0207 catalog excerpt covering the 800 A frame.

What to Avoid

Engineers often overlook the risk of generic PDF aggregator sites. Search results for "ACB datasheet PDF" return content farms that rehost five-year-old documents without revision tracking. A common mistake is citing one of these in a calculation note. If the design is later audited under IEC 61439-1 Clause 10.10 verification, the auditor will ask for the document chain of custody.

Key takeaway: Three valid sources only — OEM portal, authorized distributor, or your project's controlled document register. Everything else is unverified.

How to Read an ACB Datasheet — The Critical Fields

A typical ABB Emax 2 datasheet runs 40+ pages. Most engineers only need a dozen values. Here is what we look at first, in order:

Rated Operational Voltage (Ue) and Insulation Voltage (Ui)

Per IEC 60947-1 §4.3.1.1, Ue is the value to which performance characteristics are referred. For the E1.2B family, Ue is 690 V AC and Ui is 1000 V AC. If your application is a 600 V system in North America under NEMA AB-1, you must verify the UL 1066 listing separately — the IEC datasheet alone is insufficient for NEC-jurisdiction installations.

Rated Service Short-Circuit Breaking Capacity (Ics) vs Ultimate (Icu)

This is where most procurement teams get burned. Icu is the value the breaker can interrupt once and remain serviceable after inspection. Ics is what it can interrupt repeatedly without degradation. For the ABB 1SDA070781R1 E1.2B 1000, Icu at 415 V is 42 kA but Ics is 100% of Icu — a strong design point. Compare carefully: some economy frames advertise Icu = 50 kA but Ics = 50% (25 kA), which changes your selectivity story entirely.

Formula: Prospective Short-Circuit Current at ACB Location — Source: IEC 60909-0 §4.2

I_k = c · U_n / (√3 · Z_k)

Symbol	Description	Unit
I_k	Three-phase symmetrical short-circuit current	kA
c	Voltage factor (1.05 LV / 1.10 MV)	—
U_n	Nominal system voltage (line-to-line)	V
Z_k	Equivalent source impedance to fault point	Ω

Rated Short-Time Withstand Current (Icw)

Icw matters when you need time-graded selectivity with downstream MCCBs. The E1.2B series carries Icw = 42 kA for 1 second — meaning you can set the short-time delay (S-function) up to 1 s without sacrificing the breaker. A frame without published Icw is essentially current-limiting only and cannot anchor a selective coordination scheme. For more on this, see our deep dive on how to size an air circuit breaker.

Comparing Datasheet Formats Across Manufacturers

Not every datasheet is structured the same. ABB front-loads electrical ratings and pushes mechanical drawings to the appendix. Schneider mixes them. Siemens leads with a one-page summary called the "selection assistant." When you are evaluating breakers for the same project, this matters.

Criteria	ABB SACE Emax 2	Schneider Masterpact MTZ	Siemens 3WL
Document portal	library.abb.com	se.com Documents	SIOS / mall.industry
Typical datasheet length	40–80 pages	50–90 pages	30–60 pages
Revision tracking	Doc number + date	Letter suffix (A, B, C)	Edition number
Trip curve format	Log-log, per trip unit	Log-log, Micrologic-specific	Log-log, ETU-specific
BIM/CAD availability	STEP, DWG, Revit	STEP, DWG, Revit	STEP, DWG
Free firmware notes	Yes (Ekip Connect)	Yes (EcoStruxure)	Yes (powerconfig)

For a deeper comparison of the products themselves, see ABB vs Schneider vs Siemens ACB.

Key takeaway: Build a one-page internal "datasheet field map" cross-walking ABB, Schneider, and Siemens terminology. It saves hours during multi-bid evaluations.

Cross-Referencing Catalog Values With Your Application

A datasheet alone tells you nothing about whether a breaker fits your installation. The values must be derated, ambient-corrected, and cross-checked against neutral conductor rules.

Temperature Derating

Every ACB datasheet includes a derating curve as a function of ambient temperature inside the switchgear cubicle — not the room. In a typical motor control center with 50 °C internal ambient, the ABB 1SDA070861R1 E1.2B 1600 derates to roughly 1500 A continuous. In practice, what we see in the field is that engineers use the 40 °C catalog value and then wonder why the trip unit bimetal nuisance-trips at 95% load on summer afternoons. For the full pathology, our article on ACB nuisance tripping causes covers this in detail.

Altitude Correction

Per IEC 60947-1 §7.1.1, ratings apply up to 2000 m. Above that, both Ue and Ie must be derated — typically 0.92 on voltage and 0.98 on current per 1000 m. Datasheets provide the exact factors in an appendix table.

Application-Specific Considerations

For data center main-tie-main configurations, the trip unit programming matters as much as the frame rating. We discuss this further in Air Circuit Breakers in Data Centers. For motor-feeder applications, the ABB 1SDA070981R1 E2.2B 1600 HR with horizontal rear terminals is often preferred for compact footprint.

Practical ACB Sizing Calculator

Document Control for Long Project Lifecycles

For substation projects with 30-year lifecycles, datasheet management is not a one-time task. Some engineers argue you can simply re-download from the OEM at any point, but in my experience that fails the moment a product reaches end-of-life and the legacy PDF is moved to an archive section — or removed entirely.

Best Practices

Capture the datasheet at the moment of purchase. Embed the PDF in the project's controlled document management system with the SKU, revision, and download date. When you specify the ABB 1SDA070821R1 E1.2B 1250 for a feeder, the datasheet becomes part of the as-built handover package alongside the trip unit setting calculations.

As-built documentation is defined as the controlled set of drawings, datasheets, and test records reflecting the equipment actually installed and commissioned, required under IEC 61355-1 for asset management traceability.

Key takeaway: Treat ACB datasheets as project artifacts, not throwaway PDFs. Version, store, and hand them over with the equipment.

Ready to Source Air Circuit Breaker?

Browse in-stock air circuit breaker units
Request a custom quote — response within 4 hours
Talk to an engineer

Frequently Asked Questions

Where can I download an official ABB Emax 2 datasheet?

The authoritative source is ABB Library (library.abb.com), searchable by part number such as 1SDA070701R1. Authorized distributors mirror the same files alongside stock listings — Stoklink's air circuit breakers collection links each SKU to its current datasheet revision.

What is the difference between Icu and Ics on an ACB datasheet?

Icu is the ultimate breaking capacity — the breaker interrupts the fault once and is then taken out for inspection. Ics is the service breaking capacity — the breaker can interrupt the same fault and continue operating. Premium frames offer Ics = 100% of Icu; budget frames may offer 50% or 75%.

Are IEC 60947-2 datasheets valid in North American (NEC/UL) installations?

Not on their own. NEC jurisdictions require UL 1066 (low-voltage power circuit breakers) or UL 489 listings. Many ACBs carry dual certification, but you must locate the UL listing data — usually in a separate document or appendix — not the IEC catalog page.

How often do manufacturers update ACB datasheets?

Major revisions occur every 2–4 years, typically aligned with IEC standard amendments or trip unit firmware releases. Minor revisions (typo corrections, dimension clarifications) can occur annually. Always check the document number suffix and publication date.

Can I use a datasheet from a third-party PDF aggregator?

We strongly recommend against it. These sites rarely track revisions, and an outdated rating value in your design calculation may not be accepted during type-test verification or third-party audit. Use OEM portals or authorized distributor pages — the same applies when sourcing data for related products like those in our miniature circuit breaker or residual current device ranges.

What CAD formats are typically available alongside the datasheet?

ABB, Schneider, and Siemens all publish 2D DWG, 3D STEP, and Revit BIM families. These are usually on a separate "downloads" tab on the product page rather than embedded in the datasheet PDF. Always verify the CAD revision matches the datasheet revision.

Conclusion

An ACB datasheet is not a marketing brochure — it is a controlled engineering document that anchors every short-circuit calculation, selectivity study, and warranty claim across the equipment's life. Treat it accordingly: download from authoritative sources, capture the revision, derate against your real installation conditions, and archive it as part of the project as-built package. The few minutes it takes to verify a document number against IEC 60947-2 compliance can prevent months of rework when commissioning reveals a mismatch. For the full selection methodology and integration with sizing, protection coordination, and maintenance planning, refer to our pillar resource on the Air Circuit Breaker Guide, and explore the wider relay and protection-device catalog at Stoklink for complementary components.