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  Schneider Electric XB/ZB 2 pushbuttons and pilot lights

Production of the XB/ZB2 series has now stopped. Actuators, pilot lights and other accessories will be available online at rswww.com until stocks are exhausted.

ZBE' contact blocks will continue to be available as they are used in the pendant stations range.

Why have they stopped being manufactured?

The XB/ZB2 range, when launched was considered state of the art, but changes in technology and in response to customer demands the Harmony XB/ZB 4 & 5 ranges were launched in 1999 and have now replaced the XB/ZB2 series.

What's the difference?

Using improved materials and design, Schneider Electric's Harmony XB/ZB 4 & 5 offer the following benefits:
  • Easier and quicker to install
  • Benefit from increased protection levels
  • Choice of high brightness LED indicators or Ba9 lamps
  • Vibration resistant spring clamp terminals or standard screw terminals
  • Available with a choice of metal or plastic bezels to give you the flexibility that your applications and industry requires
The tables below will help you find the equivalent products in the two ranges

Note: parts are not inter-changeable between the two ranges. XB4 operators with not function with XB2 bodies and contacts.


Switches and pilot lights XB/ZB 2 Range XB/ZB 4 Range
RS Stock Number Manufacturers Part Code Manufacturers Part Code RS Stock Number
Pushbuttons IP66 NO black booted pushbutton switch 139-142 XB2BP21 XB4BP21 330-8773
IP66 NC red booted pushbutton switch 139-164 XB2BP42 XB4BP42 330-8802
IP66 NO green booted pushbutton switch 139-158 XB2BP31 XB4BP31 330-8795
IP66 NO blue booted pushbutton switch 139-186 XB2-BP61 XB4BP61 330-8824
IP66 NO yellow booted pushbutton switch 139-170 XB2BP51 XB4BP51 330-8818
NO flush mount black pushbutton switch 318-862 XB2BA21 XB4BA21 330-8616
IP65 NC, flush mount red pushbutton switch 318-840 XB2BA42 XB4BA42 330-8644
NO flush mount green pushbutton switch 318-856 XB2BA31 XB4BA31 330-8638
NO flush mount blue pushbutton switch 139-237 XB2BA61 XB4BA61 330-8666
NO flush mount yellow pushbutton switch 318-878 XB2BA51 XB4BA51 330-8650
NO flush mount white pushbutton switch 139-221 ZB2BA1 + ZB2B2101 ZB4BA1 + ZB4BZ101 330-8953 + 331-0158
Black latching pushbutton 305-1461 XB2BA3351 ZB4BA335 + ZB4BZ101 609-5313
Red latching pushbutton 305-1483 XB2BA4322 ZB4BA432 + ZB4BZ102 2509354283 + 331-016 4
Green latching pushbutton 305-1449 XB2BA3311 ZB4BA331 + ZB4BZ101 609-5290
White latching pushbutton 305-1455 XB2BA3341 ZB4BA334 + ZB4BZ101 609-5307
NC & NO non illuminated start/stop switch 319-001 XB2BL94345 XB4BL73415 605-521
NO non illuminated black pushbutton switch 318-907 XB2BL21 XB4BL21+ZB4BZ101 609-2487 + 331-0158
IP65 NC non illuminated red pushbutton switch 318-884 XB2BL42 XB4BL42 330-8767
NO non illuminated green pushbutton switch 139-243 XB2BL31 XB4BL31+ZB4BZ101 2509354750 + 331-0158
NO non illuminated blue pushbutton switch 318-890 XB2BL61 XB4BL61+ZB4BZ101 2509354794 + 3310158
NO non illuminated yellow pushbutton switch 318-913 XB2BL51 XB4BL51+ZB4BZ101 2509354788 + 331-0158
Red illuminated pushbutton 305-1679 XB2BW3461   Contact technical helpline
Green illuminated pushbutton 305-1663 XB2BW3361   Contact technical helpline
Yellow illuminated pushbutton 305-1685 XB2BW3561   Contact technical helpline
Mushroom head 40mm black mushroom pushbutton 305-1499 XB2BC21 ZB4BC2 + ZB4BZ101 609-5329
40mm green mushroom pushbutton 305-1506 XB2BC31 ZB4BC3 + ZB4BZ101 330-9029 + 331-0158
40mm yellow mushroom pushbutton 305-1512 XB2BC51 XB4BC51 342-2627 + 31-0158
Emergency stop NC key release emergency stop switch 318-991 XB2BS142 XB4BS142 425-8427
NC twist release emergency stop switch,NC 318-979 XB2BS542 XB4BS542 413-7910
NC twist release emergency stop switch 139-265 XB2BS642 ZB4BS64 + ZB4BZ102 425-8483 + 331-0164
NC pull release emergency stop switch 318-963 XB2BT42 XB4BT42 425-8506
NC spring release emergency stop switch 318-985 XB2BC42 XB4BC42 330-9035 + 331-0164
Selector switch IP65 NO 2 position selector switch 319-039 XB2BD21 XB4BD21 330-8672
IP65 2xNO 3 position selector switch 319-045 XB2BD33 XB4BD33 330-8694
2 position spring return selector switch 139-271 XB2BD41 XB4BD41+ZB4BZ101 330-9063 + 331-0158
3 position spring return selector switch 139-287 XB2BD53 XB4BD53 330-8701
Key switch IP65 1NO 2 position key selector switch 319-073 XB2BG41 XB4BG41 330-8745
LH withdraw 2position key selector switch 319-051 XB2BG21 XB4BG21 330-8723
Key selector 3 positions 305-1590 XB2BG03 XB4BG03 330-8717
2NO 3 position stay put key selector 139-300 XB2AG03 XB4BG03 330-8717
2NO stay put 3 position key selector 319-067 XB2BG33 XB4BG33 330-8739
2NO 3position spring return key selector 139-366 XB2BG73 XB4BG73+ZB4BZ103 330-9186 + 331-0186
Joystick 2 direction stay put joystick controller 139-108 XD2PA12+ZD2GY2201 XD4PA12 609-6776
2 direction spring return joystick 139-114 XD2PA22+ZD2GY2201 XD4PA22 609-9860
4 direction spring return joystick 139-120 XD2PA24+ZD2GY4201 XD4PA24 609-9876
Pilot light Led pilot light head green 305-1635 XB2BV1243 XB4BVM3 330-8931
Led pilot light head red 305-1641 XB2BV1244 XB4BVM4 330-8947
Led pilot light head yellow 305-1657 XB2BV1245 XB4BVM5 609-5846
Led pilot light green 305-1607 XB2BV63 XB4BV63 330-8874
Led pilot light red 305-1613 XB2BV64 XB4BV64 330-8880
Led pilot light yellow 305-1629 XB2BV65 XB4BV65 330-8896
Reset Mechanical overload black reset switch 139-079 XB2BA924 XB4BA921 2509351593
Mechanical overload red reset switch 139-085 XB2BA944   Contact technical helpline
Mechanical overload blue reset switch 139-091 XB2BA964   Contact technical helpline


Control Components XB/ZB 2 Range XB/ZB 4 Range
RS Stock Number Manufacturers Part Code Manufacturers Part Code RS Stock Number
Pushbutton heads Black spring return p/button head booted 305-1742 ZB2BP2 ZB4BP2 609-2516
Redpushbutton head 132-3837 ZB2BA4 ZB4BA4 330-8981
NO nonilluminated white pushbutton switch 139-259 ZB2BL1+ZB2B2101   Contact technical helpline
Black latching head for pushbutton 132-3815 ZB2BA2 ZB4BA2 330-8969
Red latching head for pushbutton 305-1770 ZB2BP4 ZB4BP4 609-2538
Green latching head for pushbutton 305-1764 ZB2BP3 ZB4BP3 609-2522
Green latching head for pushbutton 132-3821 ZB2BA3 ZB4BA3 330-8975
Blue latching head for pushbutton 305-1736 ZB2BA6 ZB4BA6 330-9007
Yellow latching head for pushbutton 305-1720 ZB2BA5 ZB4BA5 330-8997
Red illuminated momentary pushbutton switch 318-929 ZB2BW34 ZB4BW34 331-0063
Green illuminated momentary pushbutton switch 318-935 ZB2BW33 ZB4BW33 331-0041
Blue illuminated momentary pushbutton switch 139-344 ZB2BW36 ZB4BW36 331-0108
Yellow illuminated momentary pushbutton switch 318-941 ZB2BW35 ZB4BW35 331-0085
White illuminated momentary pushbutton switch 139-338 ZB2BW31 ZB4BW31 331-0029
Clear illuminated momentary pushbutton switch 318-957 ZB2BW37 ZB4BW37 331-0120
Pushbutton Head white arrow, 22mm diam. 187-201 ZB2BA334 ZB4BA334 609-2140
illuminated 2-head pushbutton 305-1938 ZB2BW84152   Contact technical helpline
illuminated actuator for start/stop switch 319-017 ZB2BW84354   Contact technical helpline
Doubleheaded pushbutton 305-1786 ZB2BA9212   Contact technical helpline
Double headed pushbutton 132-3758 ZB2BA9234   Contact technical helpline
Mushroom heads Mushroom head 40 mm 305-1792 ZB2BT4 ZB4BT4 425-8499
Mushroom head 40 mm 305-1843 ZB2BS944 ZB4BS944 413-8020
Mushroom head 40 mm 305-1837 ZB2BS14 ZB4BS14 413-8014
Mushroom head 30 mm 305-1809 ZB2BS44 ZB4BS44 413-7982
Mushroom head 132-3843 ZB2BS54 ZB4BS54 413-7960
Mushroom head 40 mm 305-1821 ZB2BS844 ZB4BS844 413-7998
Emergency stop heads NC&NO twist release emergency stop switch 139-209 ZB2BS844+ZB2BZ105 XB4BS8445 425-8449
NC&NO key release emergency stop switch 139-215 ZB2BS944+ZB2BZ105 XB4BS9445 426-2791
Selector switch heads Selector Switch Head 3 pos.,22mm, black 187-239 ZB2BD5 ZB4BD5 330-9085
3position selector switch 132-3770 ZB2BD3 ZB4BD3 330-9057
2 position selector switch long handle 305-1859 ZB2BJ2 ZB4BJ2 330-9192
3 position selector switch long handle 305-1865 ZB2BJ3 ZB4BJ3 330-9209
2 position red illuminated selector switch 139-035 ZB2BK124 ZB4BK1243 330-9243
3 position red illuminated selector switch 139-057 ZB2BK134 ZB4BK1343 330-9300
2 position green illuminated selector switch 139-013 ZB2BK123 ZB4BK1233 330-9237
3 position green illuminated selector switch 139-041 ZB2BK133 ZB4BK1333 330-9287
2 position yellow illuminated selector switch 139-029 ZB2BK125 ZB4BK1253 330-9259
3 position yellow illuminated selector switch 139-063 ZB2BK135 ZB4BK1353 330-9316
Key switch heads 2-position key switch 305-1887 ZB2BG4 ZB4BG4 330-9164
2 position spring return key selector 139-293 ZB2BG61 XB4BG61 330-8751
2 position key switch 132-3786 ZB2BG2 ZB4BG2 330-9142
3 position key switch 132-3792 ZB2BG3 ZB4BG3 330-9158
3-position key switch 305-1871 ZB2BG0 ZB4BG0 330-9120
Pilot light heads 22mm IP65 white panel mount indicator 139-316 ZB2BV01 ZB4BV01 330-9423
22mm IP65 green panel mount indicator 319-146 ZB2BV03 ZB4BV03 330-9445
22mm IP65 red panel mount indicator 319-152 ZB2BV04 ZB4BV04 330-9467
22mm IP65 yellow panel mount indicator 319-168 ZB2BV05 ZB4BV05 330-9489
22mm IP65 blue panel mount indicator 139-322 ZB2BV06 ZB4BV06 330-9502
22mm IP65 clear panel mount indicator 319-174 ZB2BV07 ZB4BV07 330-9524
Contacts/bodies and lamp holders IP65 normally open contact block 319-203 ZB2BE101 ZBE101 331-0473
Contact Block, NC 187-217 ZB2BE1016 ZBE1016 2509356015
IP65 normally closed contact block 319-219 ZB2BE102 ZBE102 331-0489
Body and contact block 132-3720 ZB2BZ101 ZB4BZ101 331-0158
Body and contact block 132-3736 ZB2BZ102 ZB4BZ102 331-0164
Body and contact block 132-3742 ZB2BZ105 ZB4BZ105 331-0192
Pushbutton body + contact blocks 305-1708 ZB2BZ103 ZB4BZ103 331-0186
Pushbutton body + contact blocks 305-1714 ZB2BZ104 ZB4BZ104 342-2784
Lamp holder with 2n/o contact block 305-1916 ZB2BW63 ZB4BW063 342-2633
Lamp holder with 2n/c contact block 305-1922 ZB2BW64 ZB4BW062 + ZBE102 342-2633 + 331-0489
Type A 1NO 1NC direct fed lamp holder 319-089 ZB2BW065 ZB4BW065 330-9782
Type B 1NO 1NC direct fed lamp holder 319-118 ZB2BW975   Contact technical helpline
Transformer lampholder,110-6V 319-124 ZB2BV3 ZB4BV3 330-9530
Transformer lampholder,220/240V-6V 319-130 ZB2BV4 ZB4BV4 330-9546
Direct fed lampholder,130V 319-095 ZB2BV6 ZB4BV6 330-9568
Resistor fed lampholder,220/240V 319-102 ZB2BV7 ZB4BV6 330-9568
Illuminated. pushbutton body 1f 305-1893 ZB2BW61 ZB4BW061 330-9760
Illuminated. pushbutton body 1o 305-1900 ZB2BW62 ZB4BW062 330-9776
1NO 1NC transformer lampholder,110/6V 319-180 ZB2BW035 ZB4BW035 330-9748
1NO 1NC transformer lampholder,240/6V 319-196 ZB2BW045 ZB4BW045 330-9754
Lamp holder with 1N0,1NC contact block 132-3809 ZB2BW075 ZB4BW065 330-9782
Accessories Label holder 132-8501 ZB2BZ32 ZBZ32 331-0495
Legend Plate Carrier 389-394 ZB2BZ33 ZBZ33 331-0502
Legend plate carrier 656-7177 ZB2BZ33 ZBZ33 331-0502
Round emergency stop legend plate 319-253 ZB2BY9330 ZBY9330 334-9689
Blanking plug, zb2sz 610-0178 ZB2SZ ZB4SZ3 609-2831
Blanking plug, zb2sz2 609-2128 ZB2SZ2 ZB4SZ3 609-2831
Blanking plug, zb2sz4 609-2134 ZB2SZ4 ZB4SZ3 609-2831
XB2-B push button latching device 139-350 ZB2-BZ21   No replacement
Cover boot for start/stop combi switch 319-023 ZB2BW008 ZBW008 342-2936
Padlockable guard for flush pushbutton 139-192 ZB2BZ6   Contact technical helpline
Potentiometer operating head 139-136 ZB2BD922 ZB4BD922 609-2207
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