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MA11125
The MA11125 is an undervoltage trip accessory from Schneider Electric's Square D series, specifically designed for use in circuit protection applications. This device operates at a supply voltage of 480 V AC and can handle input frequencies ranging from 50 Hz to 60 Hz.
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Technical specifications for MA11125
| Manufacturer | Schneider Electric |
|---|---|
| Product Type | Undervoltage trip accessory |
| Product Line | Square D |
| Part Number | MA11125 |
| UPC | 785901144410 |
| Weight | 1.00 lbs (0.45 kg) |
| Supply Voltage | 480 VAC |
| Supply Frequency | 50 Hz / 60 Hz |
| Trip Threshold | 0.35–0.7 × Un (168–336 VAC) |
| Reclose Threshold | 0.85 × Un (≈408 VAC) |
| Release Mechanism | Coil drop‑out under‑voltage |
| Control Characteristic | Standard response |
| Mounting | Snap‑on to breaker frame |
| Holding Power | 4.5 VA |
| Response Time | ~90 ms |
| Dielectric Strength | 2 kVAC, 1 min |
| Housing | Thermoset plastic |
The MA11125 model is an undervoltage trip accessory within Schneider Electric's Square D series. This unit operates optimally at a supply voltage of 480 VAC and is compatible with supply frequencies of both 50 Hz and 60 Hz. The operational flexibility allows for a trip threshold that ranges from 168 VAC to 336 VAC by utilizing 0.35 to 0.7 times the nominal supply voltage. When the voltage recovers to around 408 VAC, it engages the reclose threshold at approximately 0.85 times the nominal value.
The release mechanism is based on a coil drop-out under-voltage design, enabling reliable operation. This accessory is characterized by its standard response attributes, ensuring consistent performance under normal conditions. Mounting is facilitated via a snap-on method directly onto the breaker frame, enhancing installation efficiency.
In terms of power, the unit operates with a holding power of 4.5 VA and exhibits a rapid response time of about 90 milliseconds when signals change. The dielectric strength is rated at 2 kVAC for a duration of one minute, ensuring robustness in various industrial settings. Encased in thermoset plastic, the housing provides durability, contributing to a total weight of approximately 0.9 kilograms.
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