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$2,180.00
單位
- SIRIUS 2P 3TK28 2NO/NC - - 10 A 600 V ac 230 V ac Screw 132mm 90mm 108mm
RS庫存編號 175-3213
製造零件編號1SBL237082R1122
BrandABB Jokab
HK$1,122.51
單位
3 - 3P AFS 3NO 4 2NO/2NC 45 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 45mm 119.5mm 80mm
RS庫存編號 175-3233
製造零件編號1SBL387082R1122
BrandABB Jokab
HK$2,554.98
單位
3 - 3P AFS 3NO 4 2NO/2NC 105 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 55mm 144mm 119.5mm
RS庫存編號 175-3238
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 187-5349
製造零件編號191705
BrandEaton
HK$970.43
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 187-5357
製造零件編號191712
BrandEaton
HK$1,826.55
單位
3 - 3P DILMS 3NO 5 2NO/3NC 32 A 400 V 24 → 27 V dc Screw 56mm 138mm 85mm
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 187-5340
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 187-5326
製造零件編號191739
BrandEaton
HK$472.42
單位
- - - DILAS - 8 4NO/4NC 4 A 415 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz Screw 45mm 117mm 68mm
RS庫存編號 175-3225
製造零件編號1SBL297082R1122
BrandABB Jokab
HK$1,502.23
單位
3 - 3P AFS 3NO 4 2NO/2NC 50 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 45mm 119.5mm 80mm
RS庫存編號 175-3231
製造零件編號1SBL367082R1122
BrandABB Jokab
HK$2,200.12
單位
3 - 3P AFS 3NO 4 2NO/2NC 100 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 55mm 144mm 119.5mm
RS庫存編號 187-5353
製造零件編號191758
BrandEaton
HK$1,249.73
單位
3 - 3P DILMS 3NO 5 2NO/3NC 25 A 400 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz Screw 56mm 138mm 85mm
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 187-5328
製造零件編號191732
BrandEaton
HK$733.86
單位
- - - DILAS - 8 4NO/4NC 4 A 415 V 110 V ac @ 50 Hz, 120 V ac @ 60 Hz 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 175-3212
製造零件編號1SBL236082R3022
BrandABB Jokab
HK$1,122.51
單位
3 - 3P AFS 3NO 4 2NO/2NC 45 A 600 V ac 24 V dc Screw 45mm 119.5mm 80mm
RS庫存編號 766-1936
製造零件編號3TK2852-1BB40
BrandSiemens
HK$2,261.00
單位
- SIRIUS 6P 3TK28 6NO/NC - - 10 A 600 V ac 24 V dc Screw 132mm 90mm 146mm
RS庫存編號 187-5360
製造零件編號191726
BrandEaton
HK$2,531.44
單位
3 - 3P DILMS 3NO 5 2NO/3NC 32 A 400 V 24 → 27 V dc Screw 56mm 138mm 85mm
RS庫存編號 175-3223
製造零件編號1SBL296082R3022
BrandABB Jokab
HK$1,502.23
單位
3 - 3P AFS 3NO 4 2NO/2NC 50 A 600 V ac 24 V dc Screw 45mm 119.5mm 80mm
RS庫存編號 175-3201
製造零件編號1SBL137082R1122
BrandABB Jokab
HK$780.69
單位
3 - 3P AFS 3NO 4 2NO/2NC 25 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 45mm 110.5mm 80mm