Safety Contactors

Safety contactors are a type of safety relay, designed to ensure that if there is a fault either externally or within a device, the circuit will remain safe. They monitor functions in the circuit and react to faults, often by stopping or preventing the movement of parts.

How do safety contactors work?

Safety contactors are devices used for risk reduction in industrial settings. They work by switching the power in an electronic circuit, usually by breaking the circuit with electrical contacts. When a fault is detected, they will isolate the function they are monitoring, preventing it from continuing to work.

Each safety contactor measures a specific function, and there is usually a whole network of interconnected safety contactors working together to minimise risk.

Types of safety contactors

Safety contacts can vary by design in a number of different ways. This includes the number of contacts, their current and voltage rating, and their dimensions, which can vary quite significantly.


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Description Price Number of Contacts Range Pole and Throw Configuration Series Normal State Configuration Number Of Auxiliary Contacts Auxiliary Contacts Contact Current Rating Contact Voltage Rating Coil Voltage Terminal Type Length Width Depth
RS庫存編號 766-1918
製造零件編號3TK2851-1AL20
BrandSiemens
HK$2,726.27
單位
- SIRIUS 2P 3TK28 2NO/NC - - 10 A 600 V ac 230 V ac Screw 132mm 90mm 108mm
RS庫存編號 175-3239
製造零件編號1SBL407082R1122
BrandABB Jokab
HK$3,442.12
單位
3 - 3P AFS 3NO 4 2NO/2NC 130 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 70mm 149mm 119.5mm
RS庫存編號 187-5341
製造零件編號191755
BrandEaton
HK$740.25
單位
3 - 3P DILMS 3NO 5 2NO/3NC 9 A 400 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz Screw 45mm 117mm 68mm
RS庫存編號 187-5342
製造零件編號191722
BrandEaton
HK$805.43
單位
3 - 3P DILMS 3NO 5 2NO/3NC 9 A 400 V 24 V dc Screw 45mm 117mm 68mm
RS庫存編號 175-3206
製造零件編號1SBL157082R1122
BrandABB Jokab
HK$826.80
單位
3 - 3P AFS 3NO 4 2NO/2NC 28 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 45mm 110.5mm 80mm
RS庫存編號 187-5351
製造零件編號191711
BrandEaton
HK$1,401.45
單位
3 - 3P DILMS 3NO 5 2NO/3NC 25 A 400 V 24 → 27 V dc Screw 56mm 138mm 85mm
RS庫存編號 766-1891
製造零件編號3TK2850-1AJ20
BrandSiemens
HK$2,726.27
單位
- SIRIUS 3P 3TK28 3NO - - 10 A 600 V ac 115 V ac Screw 132mm 90mm 108mm
RS庫存編號 175-3227
製造零件編號1SBL347082R1122
BrandABB Jokab
HK$2,010.86
單位
3 - 3P AFS 3NO 4 2NO/2NC 70 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 55mm 144mm 119.5mm
RS庫存編號 175-3211
製造零件編號1SBL177082R1322
BrandABB Jokab
HK$691.97
單位
3 - 3P AFS 3NO 4 2NO/2NC 30 A 600 V ac 100 → 250 V @ 50/60 Hz, 100 → 250 V dc Screw 45mm 110.5mm 80mm
RS庫存編號 187-5338
製造零件編號191741
BrandEaton
HK$516.35
單位
3 - 3P DILMS 3NO 5 2NO/3NC 9 A 400 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz Screw 45mm 117mm 68mm
RS庫存編號 187-5336
製造零件編號191721
BrandEaton
HK$773.32
單位
3 - 3P DILMS 3NO 5 2NO/3NC 7 A 400 V 24 V dc Screw 45mm 117mm 68mm
RS庫存編號 766-1914
製造零件編號3TK2851-1AJ20
BrandSiemens
HK$2,726.27
單位
- SIRIUS 2P 3TK28 2NO/NC - - 10 A 600 V ac 115 V ac Screw 132mm 90mm 108mm
RS庫存編號 187-5345
製造零件編號191710
BrandEaton
HK$1,179.24
單位
3 - 3P DILMS 3NO 5 2NO/3NC 18 A 400 V 24 → 27 V dc Screw 56mm 138mm 85mm
RS庫存編號 187-5343
製造零件編號191704
BrandEaton
HK$695.59
單位
3 - 3P DILMS 3NO 5 2NO/3NC 18 A 400 V 110 V ac @ 50 Hz, 120 V ac @ 60 Hz Screw 56mm 138mm 85mm
RS庫存編號 187-5352
製造零件編號191737
BrandEaton
HK$1,249.73
單位
3 - 3P DILMS 3NO 5 2NO/3NC 25 A 400 V 110 V ac @ 50 Hz, 120 V ac @ 60 Hz Screw 56mm 138mm 85mm
RS庫存編號 187-5340
製造零件編號191734
BrandEaton
HK$740.25
單位
3 - 3P DILMS 3NO 5 2NO/3NC 9 A 400 V 110 V ac @ 50 Hz, 120 V ac @ 60 Hz Screw 45mm 117mm 68mm
RS庫存編號 175-3238
製造零件編號1SBL397082R1322
BrandABB Jokab
HK$3,217.38
單位
3 - 3P AFS 3NO 4 2NO/2NC 125 A 600 V ac 100 → 250 V @ 50/60 Hz, 100 → 250 V dc Screw 70mm 149mm 119.5mm
RS庫存編號 175-3226
製造零件編號1SBL297082R1322
BrandABB Jokab
HK$1,454.92
單位
3 - 3P AFS 3NO 4 2NO/2NC 50 A 600 V ac 100 → 250 V @ 50/60 Hz, 100 → 250 V dc Screw 45mm 119.5mm 80mm
RS庫存編號 175-3199
製造零件編號1SBL136082R3022
BrandABB Jokab
HK$780.69
單位
3 - 3P AFS 3NO 4 2NO/2NC 25 A 600 V ac 24 V dc Screw 45mm 110.5mm 80mm
RS庫存編號 187-5337
製造零件編號191702
BrandEaton
HK$516.35
單位
3 - 3P DILMS 3NO 5 2NO/3NC 9 A 400 V 110 V ac @ 50 Hz, 120 V ac @ 60 Hz Screw 45mm 117mm 68mm