Sample certificate · ACB
ABB SACE Emax E3N-A, 2000 A: test certificate
A real certificate from a recent major service, published with the customer's name, site, references and serial numbers removed. Every unit we return comes with one like this.
- BreakerEmax E3N-A, 3-pole, fixed
- Trip unitPR122/P LSI
- Rating2000 A, UL listed
- ResultAll tests passed
Sample. Customer name, site address, purchase order, customer references and the breaker serial number have been removed. All test results are exactly as recorded.
Circuit breaker
| Manufacturer | ABB SACE |
| Type | Emax E3N-A 20 (UL-listed low-voltage AC power circuit breaker, ANSI C37.13) |
| Rating | 2000 A, 3-pole, fixed pattern |
| As found | OFF, isolated, springs discharged |
| Trip unit | SACE PR122/P, LSI, rating plug 2000 A |
| Settings | I1 1.0 · t1 3 s · I2 1.2 · t2 0.1 s, I²t on · I3 1.6 · ground fault off |
| Test method | Secondary injection, ABB Ekip SIM test kit |
Protection injection test
Trip times recorded on each pole. Every result fell inside its theoretical band.
| Function | Injected | Test point | Expected | L1 | L2 | L3 | Result |
|---|---|---|---|---|---|---|---|
| Long time (L) | 3000 A | I1 × 1.5 | 10.8–13.2 s | 11.42 s | 12.28 s | 13.17 s | Pass |
| Long time (L) | 6000 A | I1 × 3 | 2.7–3.3 s | 2.821 s | 3.124 s | 3.097 s | Pass |
| Short time (S) | 4800 A | I2 × 2, I²t | 1.48–2 s | 1.658 s | 1.777 s | 1.673 s | Pass |
| Short time (S) | 20000 A | 10 In, definite time | 60–140 ms | 72 ms | 79 ms | 85 ms | Pass |
| Instantaneous (I) | 3680 A | I3 + 15% | ≤ 50 ms | 12 ms | 11 ms | 14 ms | Pass |
| Instantaneous (I) | 2720 A | I3 − 15% | No instantaneous trip | 4.972 s | 4.999 s | 5.012 s | Pass |
Contact and insulation resistance
| Test | Test V | L1 | L2 | L3 |
|---|---|---|---|---|
| Contact resistance | 10 A | 14 µΩ | 10 µΩ | 13 µΩ |
| IR phase to earth | 500 V | >1000 MΩ | >1000 MΩ | >1000 MΩ |
| IR open pole | 500 V | >1000 MΩ | >1000 MΩ | >1000 MΩ |
| IR phase to phase | 500 V | L1–L2, L1–L3, L2–L3: all >1000 MΩ | ||
Accessories and mechanism
| Motor operator | 110/120 V · Pass |
| Closing coil | 110/120 V · Pass · Replaced |
| Shunt trip coil | 110/120 V · Pass · Replaced |
| Undervoltage coil | 110/120 V · Pass · Replaced |
| Auxiliary contacts | 2 NO / 2 NC · Pass |
| Contact wear | <20% · Pass |
| Arcing contact gap | 0.4 mm · Pass |
| Mechanism, springs, counter, trip indication, pushbuttons | Pass |
Work completed
Major service. The breaker arrived with a broken charging handle, a missing CLOSE button, and corrosion and rust contamination throughout.
The unit was stripped down and the operating mechanism fully dismantled so each component could be inspected. Parts were cleaned ultrasonically, re-lubricated and reassembled. A new charging handle and CLOSE pushbutton were fitted. The closing coil, shunt trip and undervoltage release were replaced as requested.
The protection release was injection-tested at multiple thresholds with ABB's Ekip SIM test kit, and tripped the breaker within the required times at every point. Contact resistance at 10 A and insulation resistance at 500 V were satisfactory. Over 30 mechanical service operations were performed.
Defects found: none outstanding. Parts used: ABB SACE manual charging handle (1), ABB SACE CLOSE button (1), plus the three replacement coils.
Ambient and breaker temperature at test: 23.5 °C. Completed and approved September 22, 2026.
This breaker is a first-generation Emax with a PR122 trip unit. More on Emax E1–E6 repair, the PR121/PR122 trip unit guide, or the LC1F contactor certificate.
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