OMRON

STi

Safety limit switch

D4B-N series

50/60 Hz

Complete safety limit switch

pin plunger
direct opening mechanism

25mΩ max. (contact resistance)
100mΩ min. (at 500 Vdc; between terminals of the same polarity and between each terminal and non-current-carrying part)

2 x 2mm min. contact gap

120 operations/minute (mechanical)
30 operations/minute (electrical)
50/60Hz

10A (carry current; A600)
100A (conditional short-circuit; EN60947-5-1)
20A (Ith enclosed thermal current; EN 60547-5-1)
60A (make current; at 120Vac; A600)
6A (break current; at 120Vac; A600)
30A (make current; at 240Vac; A600)
3A (break current; at 240Vac; A600)
15A (make current; at 480Vac; A600)
1.5A (break current; at 480Vac; A600)
12A (make current; at 600Vac; A600)
1.2A (break current; at 600Vac; A600)
10A non-inductive load (resistive load; NC; 125-400Vac)
10A non-inductive load (resistive load; NC; 8-14Vdc)
6A non-inductive load (resistive load; NC; 30Vdc)
0.8A non-inductive load (resistive load; NC; 125Vdc)
0.4A non-inductive load (resistive load; NC; 250Vdc)
3A non-inductive load (lamp load; NC; 125Vac)
2A non-inductive load (lamp load; NC; 250Vac)
1.5A non-inductive load (lamp load; NC; 400Vac)
6A non-inductive load (lamp load; NC; 8-14Vdc)
4A non-inductive load (lamp load; NC; 30Vdc)
0.2A non-inductive load (lamp load; NC; 125Vdc)
0.1A non-inductive load (lamp load; NC; 250Vdc)
10A non-inductive load (resistive load; NO; 125-400Vac)
10A non-inductive load (resistive load; NO; 8-14Vdc)
6A non-inductive load (resistive load; NO; 30Vdc)
0.8A non-inductive load (resistive load; NO; 125Vdc)
0.4A non-inductive load (resistive load; NO; 250Vdc)
1.5A non-inductive load (lamp load; NO; 125Vac)
1A non-inductive load (lamp load; NO; 250Vac)
0.8A non-inductive load (lamp load; NO; 400Vac)
3A non-inductive load (lamp load; NO; 8-30Vdc)
0.2A non-inductive load (lamp load; NO; 125Vdc)
0.1A non-inductive load (lamp load; NO; 250Vdc)
10A (inductive load; NC; 125-250Vac)
3A (inductive load; NC; 400Vac)
10A (inductive load; NC; 8-14Vdc)
6A (inductive load; NC; 30Vdc)
0.8A (inductive load; NC; 125Vdc)
0.4A (inductive load; NC; 250Vdc)
5A inductive load (motor load; NC; 125Vac)
3A inductive load (motor load; NC; 250Vac)
1.5A inductive load (motor load; NC; 400Vac)
6A inductive load (motor load; NC; 8-14Vdc)
4A inductive load (motor load; NC; 30Vdc)
0.2A inductive load (motor load; NC; 125Vdc)
0.1A inductive load (motor load; NC; 250Vdc)
10A (inductive load; NO; 125-250Vac)
3A (inductive load; NO; 400Vac)
10A (inductive load; NO; 8-14Vdc)
6A (inductive load; NO; 30Vdc)
0.8A (inductive load; NO; 125Vdc)
0.4A (inductive load; NO; 250Vdc)
2.5A inductive load (motor load; NO; 125Vac)
1.5A inductive load (motor load; NO; 250Vac)
0.8A inductive load (motor load; NO; 400Vac)
6A inductive load (motor load; NO; 8-14Vdc)
4A inductive load (motor load; NO; 30Vdc)
0.2A inductive load (motor load; NO; 125Vdc)
0.1A inductive load (motor load; NO; 250Vdc)
30A max. inrush current
2A (AC-15)

(AC-15) 400 V

120Vac (A600; 60A make current)
240Vac (A600; 30A make current)
480Vac (A600; 15A make current)
600Vac (A600; 12A make current)

(between terminals of same polarity) 2.5 kV
(between terminals of different polarity) 4 kV
(between each terminal and non-current carrying metallic parts) 4 kV

(EN60947-5-1) 600 V

1 x term. wiring chamber with M20 cond. entry

Class I electric shock protection (with ground terminal)

0.001...0.5m/s operating speed

0 NO Pole(s)

2 NC Pole(s)

2NC (slow-action)

IP67

-40...+80 °C

(10A resistive load at 250Vac) min. 500 000 operations

min. 10 000 000 operations

(make; A600) 7200 VA
(break; A600) 720 VA

D4B-4A70N

Commercialized

D4B4A70N

4536854776663

EN ISO 14119
EN 60947-5-1 (certified direct opening mechanism)
EN 60947-5-1 (uncertified direct opening mechanism)
GS-ET-15
GB/T 14048.5
EN 50041
EN 60204-1
Vibration resistance - 10 to 55 Hz Single amplitude of 0.75mm
Shock resistance - 1000m/s2 min. (destruction)
Shock resistance - 300m/s2 min. (malfunction)
UL 508
CAN/CSA C22.2 No.14

Direct opening mechanism (NC contacts only) added to enable opening contacts when faults occur; such as fused contacts.
Safety of lever settings ensured using a mechanism that engages a gear between the operating position indicator plate and the lever.
Equipped with a mechanism that indicates the applicable operating zone; as well as push-button switching to control left and right motion.
Head seal structure strengthened to improve seal properties (TUV -- IEC IP67; UL -- NEMA 3; 4; 4X; 6P; and 13).
Wide standard operating temperature range -- -40 to 80°C (standard type).
Certified standards -- UL; CSA; EN (TUV); and CCC.

Japan

3 (as per EN60947-5-1)