Simbologia Electrica Americana Y Europea.pdf Direct
This is where the visual difference is most obvious. The American style often looks more "pictographic," while the European style is more abstract and schematic.
| Component | American (NEMA) | European (IEC) | | :--- | :--- | :--- | | Normally Open (NO) Contact | Looks like two parallel lines separated by a gap. | Two lines touching at a point, resembling a hinge. | | Normally Closed (NC) Contact | Two parallel lines with a diagonal line crossing them (indicating a barrier). | Two lines separated by a gap, with a diagonal line bridging the gap. | | Pushbutton (NO) | Usually looks like a button on top of an open contact. | Represented by a circle or a "bucket" shape pushing the contact lines together. | | Pushbutton (NC) | A button on top of a closed contact. | A "bucket" shape pulling the contact lines apart. |
When working with a mixed-standard project (e.g., a European machine installed in the US, or vice versa): Simbologia Electrica Americana Y Europea.pdf
Before diving into specific icons, you must understand the design logic:
| Componente | Simbología Americana | Simbología Europea | | :--- | :--- | :--- | | Bobina (Relé) | Un círculo con dos patas. A menudo se escribe dentro la letra "M" (motor) o "CR" (Control Relay). | Un rectángulo vacío o con una línea diagonal en su interior. Es más geométrico. | This is where the visual difference is most obvious
| Componente | Simbología Americana | Simbología Europea | | :--- | :--- | :--- | | Lámpara Incandescente | Un círculo con una "X" en el interior (o a veces con una onda dentro). | Un círculo con una "X" en el interior. (Aquí suelen ser muy similares). | | Luminaria Fluorescente | Un rectángulo largo con líneas internas. | Un rectángulo largo, a menudo con una "H" o signo específico dentro. |
La nomenclatura para identificar componentes en los planos también varía: | Two lines touching at a point, resembling a hinge
| Tipo de Componente | Código Americano (ANSI) | Código Europeo (IEC/ DIN) | | :--- | :--- | :--- | | Fusible | F | F (A veces se usaba 'Si' en normas antiguas) | | Disyuntor | CB | QF | | Contactor | M o CR | KM | | Relé de Sobrecarga | OL o PT | FR o BB | | Pulsador | PB | S o SB | | Motor | M | M | | Transformador | T | T |