{"id":27,"date":"2026-06-01T10:37:36","date_gmt":"2026-06-01T10:37:36","guid":{"rendered":"https:\/\/khkrh7q1ur.wpdns.site\/product\/auxiliary-and-signal-contact-test-bench\/"},"modified":"2026-06-10T07:29:08","modified_gmt":"2026-06-10T07:29:08","slug":"auxiliary-and-signal-contact-test-bench-product","status":"publish","type":"product","link":"https:\/\/benlongkj.com\/fa\/product\/auxiliary-and-signal-contact-test-bench-product\/","title":{"rendered":"\u0645\u06cc\u0632 \u062a\u0633\u062a \u062a\u0645\u0627\u0633 \u06a9\u0645\u06a9\u06cc \u0648 \u0633\u06cc\u06af\u0646\u0627\u0644"},"content":{"rendered":"
\n
\n
\n
Dual\u2011mode logic \u00b7 Contact resistance<\/div>\n

Auxiliary & Signal Contact Test Bench for RCBO\/MCB<\/h1>\n

Automated and manual testing of auxiliary contacts and alarm contacts (or signals) is performed on the bench. The bench will confirm that the contact state has changed from normal to reverse (or vice versa) for each time the breaker handle is manually opened or closed (verify the state of an auxiliary contact for each time a person manually opens or closes the breaker handle). The bench will confirm that the contact state will NOT change while the breaker is being manually opened (verify the state of an alarm contact while a person is manually opening the breaker) or changed when a fault has occurred, but it WILL change state when a fault trip is simulated. (The simulation is accomplished with either the RCBO test button or producing a dead short.) The bench will also measure the auxiliary contact resistance using a micro-ohmmeter and perform hi-pot testing to confirm that no leakage current occurs. The bench is suitable for QC labs and production lines, as well as incoming inspection of an auxiliary contact module.<\/p>\n

Standard delivery: 30-45 days | Dual\u2011mode logic testing | Contact resistance & hi\u2011pot<\/span><\/p>\n<\/p><\/div>\n

\n \"Auxiliary<\/p>\n
Dual\u2011mode contact test station (actual product)<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
\n

What Problems Does This Test Bench Solve?<\/h2>\n

The auxiliary\/signal contacts are essential components when doing remote monitoring of circuit breakers. However, there are three major problems common to both manufacturers and users of circuit breakers: incorrect switching logic (e.g. alarm triggering on manual opening, producing false alarms); high contact resistance (oxidation of contacts will result in loss of signal transmission); and insulation breakdown (this can create a safety issue). The bench will remedy all three problems with a tested sequence to validate the dual mode logic (Auxiliary vs. Alarm), measure contact resistance ( to Identifying Broken Circuit Breakers).<\/p>\n

\n
\n Dual\u2011mode logic verification<\/strong><\/p>\n

Test Auxiliary mode (contacts change with handle) and Alarm mode (contacts only change for a fault trip and not for a manual open).<\/p>\n<\/p><\/div>\n

\n Contact resistance measurement<\/strong><\/p>\n

Measures resistance of closed contacts (<50m\u03a9 typical) \u2013 detects oxidation or poor contact that can cause signal failure.<\/p>\n<\/p><\/div>\n

\n Dielectric strength test (hi\u2011pot)<\/strong><\/p>\n

Applies 1500V or 2000V AC between terminals to verify insulation integrity, per IEC 60947\u20115\u20111.<\/p>\n<\/p><\/div>\n

\n Mechanical interlock verification<\/strong><\/p>\n

Checks proper fitment and actuation of the auxiliary\/signal contact when mounted on RCBO\/MCB.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

\n

Test Process & Customer Benefits<\/h2>\n
\n
\n \"Intelligence<\/p>\n
Intelligence & Visibility \u2013 real\u2011time display of contact status (NO\/NC) and test parameters<\/div>\n<\/p><\/div>\n
\n \"Efficiency<\/p>\n
Efficiency & Sustainability \u2013 automated test sequence reduces manual testing time by 80%<\/div>\n<\/p><\/div>\n
\n \"Design<\/p>\n
Design & Integration \u2013 universal fixture for different auxiliary contact models<\/div>\n<\/p><\/div>\n
\n \"Safety<\/p>\n
Safety & Reliability \u2013 enclosed hi\u2011pot test area with interlock protects operator<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

\u0645\u0634\u062e\u0635\u0627\u062a \u0641\u0646\u06cc<\/h2>\n
Test bench for auxiliary and alarm contacts. Dual\u2011mode logic (Auxiliary\/Alarm), contact resistance (<50m\u03a9), hi\u2011pot test (1500V\/2000V AC), mechanical interlock verification.<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Test functions<\/th>\nAuxiliary mode logic, Alarm mode logic, contact resistance, dielectric strength (hi\u2011pot), mechanical interlock\n <\/td>\n<\/tr>\n
Contact resistance measurement<\/th>\nRange 0\u2011200m\u03a9, accuracy \u00b11%, test current 1A DC (micro\u2011ohmmeter)\n <\/td>\n<\/tr>\n
Contact resistance acceptance<\/th>\n<50m\u03a9 (typical), programmable limit\n <\/td>\n<\/tr>\n
Hi\u2011pot test voltage<\/th>\n1500V AC \/ 2000V AC (programmable, 1\u201160 seconds)\n <\/td>\n<\/tr>\n
Leakage current threshold<\/th>\nProgrammable (e.g., 5mA, 10mA)\n <\/td>\n<\/tr>\n
Auxiliary mode test<\/th>\nManual handle operation (close\/open) \u2013 automatic continuity check on NO\/NC contacts\n <\/td>\n<\/tr>\n
Alarm mode test \u2013 manual opening<\/th>\nContact must NOT change state\n <\/td>\n<\/tr>\n
Alarm mode test \u2013 fault trip simulation<\/th>\nContact must change state (NO\u2192closed, NC\u2192open) instantly\n <\/td>\n<\/tr>\n
Fault trip simulation method<\/th>\nFor RCBO: automatic \u201cT\u201d button press; for MCB: short\u2011circuit current injection (optional)\n <\/td>\n<\/tr>\n
\u0645\u0646\u0628\u0639 \u062a\u063a\u0630\u06cc\u0647<\/th>\n220V \u00b110% 50Hz\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Core Customer Benefits \u2013 Why Manufacturers Use This Bench<\/h2>\n
\n
\n

Benefit 1: Eliminates false alarms in the field<\/h4>\n

Alarm contacts will only be tested as functioning properly (i.e. alarm contacts) when an actual fault occurs (E.G. pressing the RCBO test button or simulating a short circuit). They will also be tested correctly when the breaker is opened manually, without causing a false alarm, which will help eliminate the wasted resources required to repair false alarms that create uncertainty among customers about the reliability of their equipment.<\/p>\n<\/p><\/div>\n

\n

Benefit 2: Detects contact oxidation before it causes failure<\/h4>\n

Field returns and Service Calls Are Expensive for Manufacturers; High Contact Resistance Measurement (50m\u03a9) Causes Signal Intermittency or Drop Out. Manufacturers Capture This Intermittent Signal and Make Repairs to the Equipment before It Is Called back to a Service Center.<\/p>\n<\/p><\/div>\n

\n

Benefit 3: Ensures insulation integrity for safety<\/h4>\n

A dielectric strength test is performed by applying the specified high voltage (1500V or 2000V) across the terminals and checking for insulation failure, as well as leakage current. As a result, a dielectric strength test is especially important for devices that have auxiliary contacts that connect to low voltage PLCs or control circuits because any failure of the insulating material could result in damaging very expensive automation equipment or creating a shock hazard.<\/p>\n<\/p><\/div>\n

\n

Benefit 4: Fast, repeatable testing<\/h4>\n

By automating the dual-mode logic test sequence, bench tests can now complete validation\/testing of an auxiliary contact module in less than 30 seconds compared to several minutes of manual multimeter testing. A single operator can test hundreds of these modules during a shift and repeatable results will be consistent with 100% accuracy.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n \u0645\u0648\u0631\u062f \u0627\u0639\u062a\u0645\u0627\u062f \u0631\u0647\u0628\u0631\u0627\u0646 \u0635\u0646\u0639\u062a<\/span><\/p>\n
\n
\n \"ABB\"\n <\/div>\n
\n \"DELIXI\"\n <\/div>\n
\n \"EKF\"\n <\/div>\n
\n \"KRIPAL\"\n <\/div>\n
\n \"HPL\"\n <\/div>\n
\n \"CHAC\"\n <\/div>\n
\n \"Schneider\"\n <\/div>\n
\n \"IEK\n <\/div>\n
\n \"SUNIR\"\n <\/div>\n
\n \"Bevone\"\n <\/div>\n
\n \"Weg\"\n <\/div>\n
\n \"HUYU\"\n <\/div>\n
\n \"RAAD\"\n <\/div>\n
\n \"WALTONE\"\n <\/div>\n
\n \"HAVELLS\"\n <\/div>\n
\n \"C&S\n <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
\n

Customer Success \u2013 Eliminating False Alarm Returns<\/h3>\n

An established RCBO company had 5% of its field returns to auxiliary contact modules and these generated false alarms when the system was manually opened. The company investigated the reason for these issues and discovered that the source of the problem was inconsistent logic testing during production. They subsequently introduced an auxiliary and signal contact test bench with automated dual-mode testing for logic verification and achieved:<\/p>\n

\n
0.1%<\/strong> False alarm returns (down from 5%)<\/div>\n
100%<\/strong> Test coverage for logic and contact resistance<\/div>\n
$200k\/year<\/strong> Saved in warranty and field service costs<\/div>\n<\/p><\/div>\n

The bench recouped its costs within 4 months of purchase, in addition to being the premier testing station for every auxiliary contact produced.<\/p>\n<\/p><\/div>\n

Applications \u2013 Where This Bench Adds Most Value<\/h2>\n
\n
\n
Auxiliary contact manufacturing<\/strong> \u2013 Final QC testing of contact logic, resistance, and insulation<\/div>\n
RCBO \/ MCB assembly lines<\/strong> \u2013 Inline verification of mounted auxiliary\/signal contacts<\/div>\n
\u0628\u0627\u0632\u0631\u0633\u06cc \u0648\u0631\u0648\u062f\u06cc<\/strong> \u2013 Testing purchased auxiliary contact modules from suppliers<\/div>\n
\u0627\u0639\u062a\u0628\u0627\u0631\u0633\u0646\u062c\u06cc \u062a\u062d\u0642\u06cc\u0642 \u0648 \u062a\u0648\u0633\u0639\u0647<\/strong> \u2013 Characterizing new auxiliary contact designs<\/div>\n<\/p><\/div>\n<\/p><\/div>\n

Custom Engineering & Delivery<\/h2>\n
\n
1. Contact sample analysis<\/strong> 7-15 days \u00b7 auxiliary\/signal contact module, RCBO\/MCB for fitment<\/div>\n
2. Fixture & logic programming<\/strong> 10-20 days \u00b7 universal fixture, dual\u2011mode test sequence<\/div>\n
3. Manufacturing & assembly<\/strong> \u06f3\u06f0-\u06f4\u06f5 \u0631\u0648\u0632<\/div>\n
4. Pre\u2011FAT<\/strong> \u062f\u0631 \u06a9\u0627\u0631\u062e\u0627\u0646\u0647 \u0628\u0646\u0644\u0648\u0646\u06af<\/div>\n
\u06f5. \u0646\u0635\u0628 \u0648 \u0622\u0645\u0648\u0632\u0634<\/strong> On-site 2\u20113 days<\/div>\n
\u06f6. \u0622\u0632\u0645\u0648\u0646 \u0646\u0647\u0627\u06cc\u06cc SAT<\/strong> 2\u20113 days \u00b7 acceptance report<\/div>\n<\/p><\/div>\n
\n

Request a Custom Auxiliary Contact Test Bench Quote<\/h2>\n

Please supply auxiliary\/signal contact test specifications and samples. We will design a test rig featuring dual-mode, contact resistance (low level) as well as hi-pot testing and calculate an ROI.<\/p>\n

\u0647\u0645\u06cc\u0646 \u062d\u0627\u0644\u0627 \u0627\u0633\u062a\u0639\u0644\u0627\u0645 \u06a9\u0646\u06cc\u062f<\/a><\/p>\n

\u0648\u0627\u062a\u0633\u200c\u0627\u067e: +86 150 5837 0007 | \u0627\u06cc\u0645\u06cc\u0644: xsb@benlongkj.cn | \u067e\u0634\u062a\u06cc\u0628\u0627\u0646\u06cc \u0627\u0646\u06af\u0644\u06cc\u0633\u06cc \u0648 \u0686\u06cc\u0646\u06cc<\/p>\n<\/p><\/div>\n

\n
\n

Why Choose Benlong for Contact Test Benches?<\/h3>\n