IEC Electrica
| Tensio AC Nominalis (50/60Hz) | UO/Un | 120V | 230V | 230V | 230V | 440V | 
| Maxima Tensio Operativa Continua (AC)) | Uc | 150V | 275V | 320V | 385V | 440V | 
| Currens Emissionis Nominalis (8/20μs) | In | XX KA | XX KA | XX KA | 10KA | 10KA | 
| Maxima Currens Exonerationis (8/20μs) | Imaximum | 50KA | 50KA | 50KA | 50KA | 50KA | 
| Impulsus Fluxus Exonerationis (10/350μs) | Idiabolus | 12.5KA | 12.5KA | 12.5KA | 10KA | 10KA | 
| Energia Specifica | W/R | 39kJ/Ω | 39kJ/Ω | 39kJ/Ω | 25kJ/Ω | 25kJ/Ω | 
| Impetus | Q | 6.25As | 6.25As | 6.25As | Quinque As | Quinque As | 
| Gradus Protectionis Tensionis | Up | 1000V | 1500V | 1600V | 1800V | 2000V | 
| Tempus Responsionis | tA | <25ns | ||||
| Fusus Subsidiarius (max) | 315A/250A gG | |||||
| Cursus Brevis Circuitus Aestimatio (AC) | ISCCR | 25KA/50KA | ||||
| TOV sustinet 5s | UT | CLXXXV | 335V | 335V | 335V | 580V | 
| TOV 120 min. | UT | 230V | 440V | 440V | 440V | 765V | 
| Modus | Defectus Tutus | Defectus Tutus | Defectus Tutus | Defectus Tutus | Defectus Tutus | |
| Numerus Portuums | 1 | |||||
UL Electrica
| Maxima Tensio Operativa Continua (AC) | MCOV | 150V | 275V | 320V | 385V | 440V | 
| Aestimatio Protectionis Tensionis | VPR | 600V | 900V | 1200V | 1350V | 1500V | 
| Currens Emissionis Nominalis (8/20μs) | I | XX KA | XX KA | XX KA | XX KA | XX KA | 
| Cursus Brevis Circuitus Aestimatio (AC) | SCCR | 200KA | 150KA | 150KA | 150KA | 200KA | 
Mechanica et Ambientalis
| Ambitus Temperaturae Operativae | Ta | -40°F ad +158°F [-40°Celsiusad +70CelsiusI | 
| Humiditas Operativa Permissa | RH | 5%…95% | 
| Pressio atmosphaerica et altitudo | 80k Pa...106k Pa/-500m...2000m | |
| Torques Cochleae Terminalis | Mmax | 39.9 lbf-in [4.5 Nm] | 
| Sectio Transversa Conductoris (max) | 2AWG (Solidum, Filum)/4AWG (Flexibile) | |
| 35mm²(Solidum, Filatum)/25 mm²(Flexibilis) | ||
| Montatio | Ferrivia DIN 35 mm. EN 60715 | |
| Gradus Protectionis | IP 20 (intus) | |
| Materia Domus | Thermoplasticum: Gradus Extinctionis UL94V-0 | |
| Protectio Thermalis | Ita | |
| Status Operandi/Indicatio Culpae | Viridis bene/Ruber vitium | |
| Contactus Remoti (RC) | Facultativum | |
| Capacitas Commutationis RC | AC: 250V / 0.5A; ABC: 250V / 0.1A; 125V / 0.2A; 75V / 0.5A | |
| Sectio Transversa Conductoris RC (max) | 16AWG (Solidum)/1.5mm²(Venditum) | 
Informationes Ordinis
| Ordo Codex | 75 | CL | 275 | 320 | 385 | 
| BY1-12.5-XXX/4 | 1207541 | 1215041 | 1227541 | 1232041 | 1238541 | 
| BY1-12.5-XXX/4S (cumcontactus remoti) | 1207542 | 1215042 | 1227542 | 1232042 | 1238542 | 
| BY1-12.5-XXX/0 (moduli reservati) | 1207501 | 1215001 | 1227501 | 1232001 | 1238501 | 
Legenda
Linea L
N Neutralis
Terra Protectoria PE
Contactus Signationis S (Optionales)
 
 		     			 
 		     			 
 		     			| BY1-XII.5-XXX/4(S) | CL | 275 | 320 | 385 | 440 | 
| Dimensiones Unitatis Singulae DIN 43880 | 1 CTN | ||||
| Dimensiones Involucri (A × L × L) | [200×230×330mm] | ||||
| Quantitas Minima Ordinis | 16Unitates | ||||
| BY1-XII.5-XXX/0 | CL | 275 | 320 | 385 | 440 | 
| Dimensiones Unitatis Singulae DIN 43880 | 1 CTN | ||||
| Dimensiones Involucri (A × L × L) | [200×230×330mm] | ||||
| Quantitas Minima Ordinis | 64Unitates | ||||
 
 		     			