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 Length Width Depth Minimum Operating Temperature
RS Stock No. 766-1936
Mfr. Part No.3TK2852-1BB40
BrandSiemens
$486.33
Each
units
- SIRIUS 6P 3TK28 6NO/NC - - 10 A 600 V ac 24 V dc 132mm 90mm 146mm -25°C
RS Stock No. 766-1891
Mfr. Part No.3TK2850-1AJ20
BrandSiemens
$436.97
Each
units
- SIRIUS 3P 3TK28 3NO - - 10 A 600 V ac 115 V ac 132mm 90mm 108mm -
New
RS Stock No. 187-5332
Mfr. Part No.191740
BrandEaton
$93.40
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 7 A 400 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz 45mm 117mm 68mm -25°C
New
RS Stock No. 187-5329
Mfr. Part No.191753
BrandEaton
$142.35
Each
units
- - - DILAS - 8 4NO/4NC 4 A 415 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz 45mm 117mm 68mm -25°C
New
RS Stock No. 187-5333
Mfr. Part No.191761
BrandEaton
$105.13
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 7 A 400 V 24 V dc 45mm 117mm 68mm -25°C
New
RS Stock No. 187-5349
Mfr. Part No.191705
BrandEaton
$188.21
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 25 A 400 V 110 V ac @ 50 Hz, 120 V ac @ 60 Hz 56mm 138mm 85mm -25°C
New
RS Stock No. 187-5342
Mfr. Part No.191722
BrandEaton
$156.19
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 9 A 400 V 24 V dc 45mm 117mm 68mm -25°C
RS Stock No. 175-3235
Mfr. Part No.1SBL387082R1322
BrandABB Jokab
$485.81
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 105 A 600 V ac 100 → 250 V dc, 100 → 250 V @ 50/60 Hz 55mm 144mm 119.5mm -40 °C, -25 °C
RS Stock No. 175-3207
Mfr. Part No.1SBL157082R1322
BrandABB Jokab
$118.64
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 28 A 600 V ac 100 → 250 V dc, 100 → 250 V @ 50/60 Hz 45mm 110.5mm 80mm -40 °C, -25 °C
New
RS Stock No. 187-5350
Mfr. Part No.191744
BrandEaton
$188.21
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 25 A 400 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz 56mm 138mm 85mm -25°C
New
RS Stock No. 187-5330
Mfr. Part No.191720
BrandEaton
$156.19
Each
units
- - - DILAS - 8 4NO/4NC 4 A 415 V 24 V dc 45mm 117mm 68mm -25°C
RS Stock No. 175-3229
Mfr. Part No.1SBL347082R1322
BrandABB Jokab
$325.76
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 70 A 600 V ac 100 → 250 V dc, 100 → 250 V @ 50/60 Hz 55mm 144mm 119.5mm -40 °C, -25 °C
RS Stock No. 175-3208
Mfr. Part No.1SBL176082R3022
BrandABB Jokab
$182.14
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 30 A 600 V ac 24 V dc 45mm 110.5mm 80mm -40 °C, -25 °C
New
RS Stock No. 187-5337
Mfr. Part No.191702
BrandEaton
$100.16
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 9 A 400 V 110 V ac @ 50 Hz, 120 V ac @ 60 Hz 45mm 117mm 68mm -25°C
RS Stock No. 175-3215
Mfr. Part No.1SBL237082R1322
BrandABB Jokab
$171.13
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 45 A 600 V ac 100 → 250 V dc, 100 → 250 V @ 50/60 Hz 45mm 119.5mm 80mm -40 °C, -25 °C
RS Stock No. 175-3225
Mfr. Part No.1SBL297082R1122
BrandABB Jokab
$291.29
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 50 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz 45mm 119.5mm 80mm -40 °C, -25 °C
New
RS Stock No. 187-5354
Mfr. Part No.191725
BrandEaton
$358.37
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 25 A 400 V 24 → 27 V dc 56mm 138mm 85mm -25°C
New
RS Stock No. 187-5347
Mfr. Part No.191757
BrandEaton
$191.82
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 18 A 400 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz 56mm 138mm 85mm -25°C
RS Stock No. 175-3206
Mfr. Part No.1SBL157082R1122
BrandABB Jokab
$173.43
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 28 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz 45mm 110.5mm 80mm -40 °C, -25 °C
New
RS Stock No. 187-5339
Mfr. Part No.191762
BrandEaton
$129.85
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 9 A 400 V 24 V dc 45mm 117mm 68mm -25°C
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