Schneider Electric RM1XA315 is the exact no-hyphen catalog reference for a TeSys RM1 single-pole magnetic overcurrent relay. Schneider lists it in the non-latching table with a recommended motor-current range of 146 to 230 A, an adjustable trip-current range of 250 to 800 A, and a maximum continuous current of 315 A for AC or DC circuits.
- Official reference: RM1XA315
- Poles and operating principle: Single-pole electromagnetic overcurrent relay, non-latching
- Recommended operating range (motor In): 146...230 A
- Trip-current setting range: 250...800 A
The relay detects current peaks above the permitted setting and trips instantaneously. It monitors one power-circuit conductor; its trip state can operate the separately ordered RM1ZG21 non-latching 1 C/O auxiliary contact block, whose Schneider schemes show 91-92 and 93-94 changeover contact terminals for contactor trip and indication circuits. Schneider describes RM1XA relays for circuits that are not normally subject to current peaks, including starter and resistor circuits, and for supervising starting peaks on slip-ring motors. RM1XA315 is not intended for frequent operation: the catalog limits it to 12 operating cycles per hour and states that it can withstand a continuous current equal to 1.25 times the minimum setting current. The reference remains documented in Schneider's 2022 TeSys overload-relay catalog, but the reviewed official sources do not establish its present sales status or a direct successor. Publication should therefore identify it as a legacy catalog reference requiring nameplate, setting, accessory and application confirmation, and should not merge it with the latching RM1XA3151 version.
Important Notice: Publish RM1XA315 only after a clear nameplate or packaging label confirms the full reference. If the trailing '1' is present, treat the unit as RM1XA3151 and rebuild the product record as the latching/manual-reset variant.
Apter Power RM1XA315 Manuals and Guides
Important Notice: The first link is the product-parameters PDF prepared only from the cited manufacturer information; the second link is the Apter Power product manual. Confirm the physical nameplate, current manufacturer documents, and host-system requirements before installation or replacement.
Starter-circuit peak protection
Instantaneously detects an abnormal current peak in a starter circuit that is not normally subject to current peaks.
Resistor-circuit overcurrent supervision
Protects a resistor circuit where the normal process does not include repeated current peaks.
Slip-ring motor starting-peak control
Supervises the current peak during starting of a slip-ring motor within the cataloged range.
Contactor trip and fault indication
Uses the RM1ZG21 changeover contact in the Schneider 2-wire or 3-wire control schemes to drop a contactor and, where engineered, signal a trip.
Read and follow the current Schneider Electric documentation and host-equipment instructions before work. Verify the complete physical nameplate and system configuration.
1
Read the complete physical reference: RM1XA315 is non-latching, while RM1XA3151 is the latching/manual-reset version.
2
Do not use the 250...800 A trip-setting range as the motor continuous-current range; Schneider separately specifies 146...230 A recommended motor In and 315 A maximum continuous current.
3
Use the relay only in a circuit whose normal behavior matches Schneider's stated application; repeated normal current peaks can cause unwanted instantaneous trips.
4
Do not exceed 12 operating cycles per hour, and do not describe this relay as suitable for frequent cycling.
5
Order and verify the correct RM1ZG21 non-latching 1 C/O contact block; do not fit latching/reset accessories by reference similarity alone.
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